Kim Kardashian wants you to know that his whole pregnancy business isn't as easy as, say, tweeting pictures of the 500 pairs of shoes she wore last week.

Actually, says the Huffington Post, it's way harder than she thought it would be.

The reality star, 32, stepped out on the red carpet for the first time since confirming she's expecting a baby with boyfriend Kanye West and said that although she has no morning sickness, she's definitely adjusting to "the growing pains."

"I wouldn't say that it's been easy," Kim told ET Online at the New Year's Eve event at 1OAK Nightclub at the Mirage in Las Vegas. "When people say pregnancy is fun and they love it I would have to disagree. I think from this stage on it does become easier, but it's adjusting" she added.

Keep in my that she's only about 12 weeks along, reports say. It will not be getting easier.

"Even my sister has made it look easy, but it's not as easy as people think," Kim continued, referring to Kourtney Kardashian's pregnancies. "It's a little painful. ... But I heard it's all worth it, so I'm looking forward to that."

She added, "I feel really good. This new year is about being happy and being healthy and that's what I plan on doing."

JAY-Z TAPPED TO HELP WRITE SCORE FOR "GREAT GATSBY" MOVIE: Jay Gatsby, meet Jay-Z.

The hip-hop star is reportedly the latest star to get attached to the upcoming film adaptation of "The Great Gatsby." Singer-songwriter Jeymes Samuel, best known as the frontman for the Bullitts, says he and Jay-Z will be writing the score for "Gatsby."

The first clue of Jay-Z's involvement with keenly anticipated film adaptation of the F. Scott Fitzgerald classic novel, was shown in the film's trailer, in which scenes of the opulent lifestyle of Jay Gatsby (Leonardo DiCaprio) are set to Jay-Z and Kanye West's "No Church in the Wild," a track off the pair's album "Watch the Throne."

Cast members also said last spring that "Gatsby" director Baz Luhrmann played Jay-Z music on the set of "The Great Gatsby." "On my first day he had Jay-Z pumped up full, and we did the entire scene with, you know, Jay-Z in our ear on full blast while acting, and it was just so liberating," Isla Fischer told MTV.

The film, also starring Tobey Maguire and Carey Mulligan, is slated to open on May 10.

HUGH HEFNER WEDS HIS RUNAWAY BRIDE: Hugh Hefner, 86, married fiancee Crystal Harris, 26, in front of family and a few close friends at the Playboy Mansion in Los Angeles on Monday, the magazine publisher confirmed on Twitter.

"Crystal & I married on New Year's Eve in the Mansion with Keith as my Best Man. Love that girl!" he tweeted early New Year's Day.

The bride wore ... clothes!

Her gown was a floor-length strapless piece in soft pink. The groom wore a traditional black tuxedo, Playboy Enterprises said in a statement.

After the ceremony came a private reception with a champagne toast and the bride and groom cut the wedding cake.

The newlyweds then attended the Mansion's annual New Year's Eve celebration and enjoyed a performance by jazz and blues singer Brenna Whitaker.

Guests included Joe Don Rooney of Rascal Flatts, 2005 Playmate of the Year Tiffany Fallon, baseball player Evan Longoria, rocker Gene Simmons and wife Shannon Tweed, and Jon Lovitz.

It was a far cry from the pair's last attempt at marriage. Five days before their planned June 2011 wedding in front of 300 guests, the nuptials were scuttled when Harris got cold feet; then she made some desultory remarks about his romantic capabilities, and he publicly whined about his broken heart.

Harris, who appeared on the July 2011 cover of the adult magazine with a "runaway bride" sticker covering her bottom half, tweeted on Monday that she was ready to commit and changed her name to "Crystal Hefner."

"Today is the day I become Mrs. Hugh Hefner," Harris, who has a psychology degree, wrote on Twitter. "Feeling very happy, lucky, and blessed."

The San Diego native, whose parents are British, said she asked for Christmas ornaments rather than lingerie at her pre-Christmas bridal shower to help decorate Hefner's famed mansion. We don't think anyone needs to psychoanalyze that one.

Hefner, founder of the Playboy adult entertainment empire, has been married twice before. He and his second wife Kimberley Conrad, also a former Playmate, divorced in 2010 after a lengthy separation. His first marriage to Mildred Williams ended in divorce in 1959. He has two children from each marriage.

BRITNEY SPEARS WORKING ON NEW ALBUM: She might have bombed on "The X Factor," but Britney Spears is apparently not content to sit at home licking her wounds (as much fun at that sounds).

Spears confirmed during a Q&A session on Twitter recently that she is "working hard" on a new album, MTV News reported. She is "excited" and has been "collaborating with some new inspiring producers."

Among her collaborators is Grammy-nominated songwriter Elijah Blake, who has worked with Usher, Rihanna and Ciara.

During an interview with hip-hop blog That Grape Juice, Blake discussed the "unexpected" direction of Spears' new album.

"I think her fans will be surprised by it," he said. "I would say it's definitely the 'unexpected' Britney in so many ways, in that she's playing with new textures and stomping on new grounds and genres. ... She's definitely trying to push the envelope this time... ."

"This album is gonna be crazy!" he added. "I write from a more cerebral place, I would say. My lyrics are more like a conversation or a thought process, I want people to hear my songs and think, honesty. I'd love to share that with her as well. She's so cool and down to earth and she gives off so much confidence that writing with her is easy."

Spears' last album, "Femme Fatale," was released in March 2011, and debuted at No. 1 on the Billboard 200 chart with hit singles "Hold It Against Me" and "Till the World Ends." Most recently she collaborated with will.i.am on his new single, "Scream & Shout."

When asked about her future as a judge on "The X Factor" during the Q&A, Spears said, "Really focused on my music right now."

That's probably because she has little else to focus on.

Rumors surfaced last week that Spears will be fired from "X Factor" after just one season due to her lackluster performance, according to Us Weekly. Simon Cowell reportedly hoped for "crazy Britney" when he offered her the $15 million contract, but got "boring Britney" instead.

"They paid all that for her to say 'amazing' and offer half-claps," a source told the magazine.

KATY PERRY TAKES JOHN MAYER TO MEET HER PARENTS: Uh, oh. It's. Getting. Serious.

Katy Perry and John Mayer, the rock-star couple that pretty much everyone assumed would burn out as soon as the novelty wore off, continues to defy expectations.

Not only are Perry and Mayer still together after several months, but she reportedly took her beau home to meet her parents over Christmas.

Hopefully, someone spiked the eggnog.

"They're happy together and with her family for the holidays," a source told Us Weekly. "John really likes getting to know Katy's family better. They've spent a lot of time together and really enjoy each other's company."

It was a major step for the pair, who apparently rekindled their relationship after it seemed to fizzle a while back.

"She's been really depressed and needs attention," an insider told the New York Daily News, back when the pair was reportedly split up. "She really liked him and thought it was going to be something serious."

Gulp!

JAN. 2 IN HISTORY

Today is Wednesday, Jan. 2, the second day of 2013. There are 363 days left in the year.

1788: Georgia became the fourth state to ratify the U.S. Constitution.

1893: The U.S. Postal Service issued its first commemorative stamp to honor the World's Columbian Expedition and the quadricentennial of Christopher Columbus' voyage.

1900: Secretary of State John Hay announced the "Open Door Policy" to facilitate trade with China.

1921: The play that coined the term "robot," ''R.U.R." (Rossum's Universal Robots) by Karel Capek, was first performed in Czechoslovakia.

1935: Bruno Hauptmann went on trial in Flemington, N.J., on charges of kidnapping and murdering the 20-month-old son of Charles and Anne Lindbergh. (Hauptmann was found guilty, and executed.)

1942: The Philippine capital of Manila was captured by Japanese forces during World War II.

1959: The Soviet Union launched its space probe Luna 1, the first manmade object to fly past the moon, its apparent intended target.

1960: Sen. John F. Kennedy of Massachusetts launched his successful bid for the presidency.

1971: 66 people were killed in a pileup of spectators leaving a soccer match at Ibrox (EYE'-brox) Stadium in Glasgow, Scotland.

1974: President Richard M. Nixon signed legislation requiring states to limit highway speeds to 55 miles an hour. (Federal speed limits were abolished in 1995).

1981: Police in Sheffield, England, arrested Peter Sutcliffe, who confessed to being the "Yorkshire Ripper," the serial killer of 13 women.

1983: the musical play "Annie" closed on Broadway after a run of 2,377 performances.

2006: 12 miners died in a methane gas explosion at the Sago Mine in West Virginia, W.Va., but one miner, Randal McCloy Jr., was eventually rescued.

2003: President George W. Bush, seeking to counter Democratic criticisms that his economic policies favored the rich, said the economic stimulus plan he was going to unveil the following week would focus on jobs and the unemployed. Sydney Omarr, the astrologer to the stars whose horoscopes appeared in more than 200 newspapers, died in Santa Monica, Calif., at age 76.

2008: The Justice Department opened a full criminal investigation into the destruction of CIA interrogation videotapes. (A special prosecutor later cleared the CIA's former top clandestine officer and others.) Pakistan pushed back parliamentary elections until Feb. 18, a six-week delay prompted by rioting that followed the assassination of opposition leader Benazir Bhutto. Oil prices soared to $100 a barrel for the first time. Late-night talk shows returned to the air two months into a writers strike. (David Letterman and Craig Ferguson had reached agreements to allow writers to work on their shows; Jay Leno, Conan O'Brien and ABC's Jimmy Kimmel returned without theirs.)

2012: A gas pipeline in central Syria exploded; the government blamed "terrorists" while the opposition accused officials of playing on fears of religious extremism and terrorism to rally support behind President Bashar Assad. No. 3 Oklahoma State beat No. 4 Stanford 41-38 in overtime in the Fiesta Bowl. No. 6 Oregon beat No. 9 Wisconsin 45-38 in the Rose Bowl.

Today's Birthdays

Country musician Harold Bradley (87), Former House Speaker Dennis Hastert (71), TV host Jack Hanna (66), actress Wendy Phillips (61), actress Gabrielle Carteris (52), movie director Todd Haynes (52), retired MLB All-Star pitcher David Cone (50), actress Tia Carrere (46), actor Cuba Gooding Jr. (45), model Christy Turlington (44), actor Taye Diggs (42), rock musician Scott Underwood (Train) (42), rock singer Doug Robb (Hoobastank) (38), actor Dax Shepard (38), actress Paz Vega (37), country musician Chris Hartman (35), rock musician Jerry DePizzo Jr. (O.A.R.) (34), rhythm-and-blues singer Kelton Kessee (IMX) (32), actress Kate Bosworth (30) and jazz singer-musician Trombone Shorty (27).