No wonder Nicole Richie has been busting her butt in the gym! She must have been gearing up for this sexy spread in California Style's "C" Magazine.

The 30-year-old actress, who is launching The Nicole Richie Collection by QVC, is showing off some of her designs in the fashion mag.

When asked about her collection, Richie said the following:

“QVC is a well-oiled machine and to be in business with them is so exciting because it gives me an opportunity to design for a much broader range of women. I wanted you to be able to walk into your closet with your eyes closed and pick something special.”

See more fashion photos of Joel Madden's wifey in the gallery below.

The stars flocked to the hottest party of the night ... the Vanity Fair post-Oscars party at the Sunset Towers Hotel.

Victoria and David Beckham made their way into the star-studded party. Posh, 37, was wearing a gorgeous white gown from her own collection with a skinny black belt.

Katie Holmes, wearing a strapless chiffon gown by Elie Saab, was escorted into the party by sexy hubby Tom Cruise.

And a blue-haired and single Katy Perry rocked a shimmery Blumarine gown. Yikes ... may be a good time to get that hair back to normal, girlfriend!

See more stars arriving at the Vanity Fair party in our gallery below.

Leave it to Jimmy Kimmel to pack all of his celebrity friends into one epic movie trailer!

During the late night host's post-Oscars show, Kimmel debuted the hilarious trailer for Movie: The Movie.

Anybody who's anybody is in there ... including Tom Hanks, George Clooney, Cameron Diaz, Jessica Alba and Matt Damon. Loves it!

Click thru to watch Jimmy pitching shows to the one and only Oprah Winfrey.

Even though George Clooney lost in the Best Actor category, the Descendants star still went on to party at Craig's Restaurant in West Hollywood.

Those in attendance included the most stunning couple of the night ... Angelina Jolie and Brad Pitt. Looks like the sexy duo finally pulled an all-nighter without their six kids. Good for them!

Mr. Clooney may have lost the Oscar to The Artist's Jean Dujardin, but the 50-year-old silver fox got to take home the gorgeous Stacy Keibler. 'Nuff said.

See which other celebrities attended George's post-Oscar bash in the gallery below.

It was no surprise The Artist took the top prize at the 84th Annual Academy Awards Sunday night, winning Best Picture. The film's lead, Jean Dujardin, won Best Actor and the film's helmer, Michel Hazanavicius, Best Director.

The silent, black and white film -- a tribute to old Hollywood -- took home four Independent Spirit Awards on Saturday and had previously won three Golden Globe Awards.

Meanwhile, Meryl Streep won top honors in the ladies' category, beating out favorite Michelle Williams (My Week With Marilyn) for the Best Actress. Streep's portrayal of Margaret Thatcher in The Iron Lady won much critical praise, and won her a Golden Globe last month as well.

Christopher Plummer became the oldest ever actor to win an Oscar (for Best Supporting Actor), at 82, for his role in Beginners. Octavia Spencer to the Best Supporting Actress prize for her role in The Help -- the only category in which the heavily-nominated film won.

Woody Allen's Midnight in Paris won for Best Screenplay and George Clooney starrer The Descendents won Best Adapted Screenplay.

Otherwise, Clooney's film came up dry, as much of Hollywood was waiting with anticipation to see if the sex symbol or his sexier pal Brad Pitt (Tree of Life and Moneyball) would walk away with any golden statues.

In the end, Brad's partner, Angelina Jolie, stole the show with her high-slit dress and super-sexy exposed leg. On the red carpet and as a presenter, Jolie stuck her leg out with no shame, batted her eyes and gave the fans what they wanted. She gets our prize for Sexiest Guest!

Click through to see the full list of Oscar winners.

Brad Pitt looked oh-so-dapper in a Tom Ford tux, while his unbelievably gorgeous ladylove Angelina Jolie stunned in a black Atelier Versace gown.

The hot mama of six, who will be presenting the Oscar for Best Adapted Screenplay, wore Neil Lane jewels and carried a Jaime Mascaro clutch.

We think Ms. Jolie has never looked sexier! Va-va-voom!!

Pitt is up for the Best Actor Oscar for his role in Moneyball. The baseball flick is also nominated for Best Picture. Batter up!

George Clooney and girlfriend Stacy Keibler are definitely a gorgeous looking duo on the red carpet at the 2012 Oscars!

The 50-year-old Descendants actor, who's nominted for Best Actor, rocked a classic Giorgio Armani tux while his lady shimmered in a gold Marchesa dress.

Stacy, 32, also happened to be dripping in Lorraine Schwartz jewels while carrying a Judith Leiber clutch. So chic!

Before hitting the carpet, Stacy Tweeted, “We are off!!!! I feel like I’m going to the prom. #oscars SO EXCITED!!!!!!!!!”

Oh, the perks that go along with dating gorgeous George!

Diamonds are a girl's best friend!

Cameron Diaz donned a nude Gucci gown, and was dripping in Tiffany & Co. jewels worth approximately $1 million, at the Academy Awards, on Sunday Night.

The Bad Teacher star has never been nominated for an Oscar, but she's had plenty of practice at being a presenter! Diaz is set to present an award tonight with pal Jennifer Lopez.

Other presenters include Emma Stone, Sandra Bullock, Christian Bale, Halle Berry, and Tom Cruise!