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For some extra tips on picking the perfect holiday outfit, we turned those who know best—celebrities, stylists, and designers. Find out what Emmy Rossum, Emma Roberts, Rebecca Taylor, and more have to say about their favorite party-ready looks in the gallery now.

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Emmy Rossum, Kristen Bell, and Claire Danes got into the holiday spirit at Showtime’s 6th annual holiday party, held at the Quincy Estate in Los Angeles. Click through to see Zoe Saldana, Sarah Jessica Parker and more stars at last night’s hottest parties!

Emmy Rossum is a triple threat—she can act, sing and design handbags! Earlier this year, the Shameless star teamed up with Elie Tahari to create the “Emmy” bucket bag to raise funds for Safe Horizon and last night, Olivia Munn was on hand at Tahari’s New York City outpost to see Rossum unveil her fashion masterpiece. Also in N.Y.C. Alexa Chung stepped behind the decks to deejay for Jessica Szohr at the Sony Ericsson Xperia Play bash, while new mom Mariska Hargitay stopped by the Can-Do Awards to benefit the city’s Food Bank. See more photos from last night’s hottest parties in the gallery.

Emmy Rossum, who currently stars on Showtime’s Shameless, turned her love of accessories into something for good. The actress teamed up with designer Elie Tahari to create a bag, aptly named the ‘Emmy’ bucket bag. “I thought a lot about the kind of bag I wanted: versatile, worn by the working woman in any season,” she told WWD. “It was important that it had compartments in the sides because I hate those big bags where your iPod cord gets mixed with your lip gloss.” (Us, too!) The leather bags are available in four sizes, and range from $398 to $798. A portion of all proceeds will be donated to Safe Horizon, a charity provides support for victims of domestic violence.

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• Demi Moore’s Jewelry for a Cause
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