Christa B. Allen

Selena Gomez, who donned Marios Schwab, linked up with Peter Pilotto-clad Julianne Hough for the British Fashion Council's opening party for the London Show Rooms at the Thompson Hotel in Beverly Hills last night. The fashionable duo were also joined by Revenge star Christa B. Allen, Pixie Geldof, and Agyness Deyn at the event, which promotes the work of emerging British designers. Julianne and Christa have been making the rounds at LA's fashionable fetes recently and they mingled together at Lucky Magazine's FABB party along with Drew Barrymore last week.

In addition to partaking in the stylish fun, Selena is busy balancing her acting and music careers. She released her new song, "Come & Get It," on Monday, and is gearing up for a live performance of her new music at this Sunday's MTV Movie Awards. On the big-screen side, Selena has recently taken on a new project in William H. Macy's directorial debut, Rudderless.

Drew Barrymore was animated at Lucky magazine's Fashion and Beauty Blog conference at the SLS Hotel in Beverly Hills yesterday. She sat down to chat beauty trends with bloggers while wearing patterned pants and a silk blouse, and then changed her ensemble to hit the cocktail party as part of the festivities later that evening. Drew, who graces Lucky's May cover, was joined by a Carolina Herrera-clad Julianne Hough, Christa B. Allen, and Kelly Osbourne for the fashionable day-long soiree.

Drew has been promoting her recently launched Flower Beauty line, and she was able to share her expertise at the event, which focuses on all things beauty and fashion. She also demonstrated her beauty knowledge during a stop on Jimmy Fallon last month where she chatted about her new line and used Jimmy as her subject for a hilarious makeup tutorial. Drew and the Late Night host have remained pals since costarring in 2005's Fever Pitch together, and she revealed that she wished Jimmy well on his upcoming move by sending him flowers accompanied by "the most loving card in the world." Jimmy was officially appointed as NBC's new Tonight Show host, taking over for Jay Leno, who will retire next year.

Hollywood's most stylish celebrities turned out for the Costume Designers Guild Awards last night in LA. Anne Hathaway wore a shimmering Gucci frock when she accepted her spotlight award, an honor given to actors and directors for their collaborations with costume designers. Skyfall, Anna Karenina, and Mirror Mirror all won awards in the film categories while Downton Abbey and Smash dominated the TV sections.

Other celebrity attendees included Anne's costar Russell Crowe, Once Upon a Time stars Ginnifer Goodwin and Josh Dallas, Amy Poehler, Jon Hamm, and Lily Collins, who wore a dramatic black gown with a giant white bow on her back. It was a mini Saturday Night Live reunion behind the scenes when Amy hung out with Kristen Wiig, Steve Martin, and Maya Rudolph, with whom she presented an award during the show. The CDG Awards are just one of the many events that lead up to the Oscars, which air on Sunday, Feb. 24. Don't forget to vote in our Oscars ballot for a chance to win $1,000 and an iPad!

Target celebrated their 50th anniversary in NYC last night, and Naomi Watts stepped out to show her support for the brand. We caught up with Naomi on the red carpet, where she spoke about her excitement for Halloween with her sons, Sasha and Kai. Stay tuned for our chat later today on PopSugar Rush! Naomi's one of the many stars who love dressing up — check out our look at over 150 celebrity Halloween costumes. Naomi also dished about the pressures of playing Princess Diana in Diana. There is more work on the set of that project to come for Naomi before the year's out, but she took time from the busy schedule to recently mark her partner Liev Schreiber's birthday.

First there was the little black dress, then the little white dress, and now celebs are painting the town in red-hot frocks. From Christa B. Allen in a cutout style by Contrarian New York ($380) to Jessica Alba in a form-fitting sheath to Miranda Kerr in a flirty, lacy Lover number ($1,050), trendsetting A-listers have have been working their red-hued numbers around the globe. Check out what other starlets have been rocking the LRD, how they styled them, and where you can buy a similar dress to get in on the Hollywood trend.

Showing off your midriff isn't for everyone, but if you've been wanting to dabble in the trend, allow five stylish celebs to show you how to do it in the classiest ways. Freida Pinto was just spotted at the 2012 Cannes Film Festival rocking a matching Salvatore Ferragamo getup, which included a striped halter crop top and matching circle skirt. Christa B. Allen has also revealed her midriff in a retro-chic way, as have a few more stars. Step inside to see them all and to shop their chic midriff-baring styles for yourself.