Actress Emmy Rossum serves up fashion advice at the U.S. Open Kickoff Party. Photo: Gary Gershoff, WireImage

At the U.S. Open Players Party on August 28th, tennis wasn't the only thing on everyone's mind.

The Heineken-sponsored event, hosted this year by Andy Roddick, James Blake, Venus Williams, and Serena Williams, is a kickoff party that usually draws a fair amount of celebs.

First up, we chatted with actress Emmy Rossum:

StyleList: "What are you wearing?"

Rossum: "I'm wearing Temperley, Jimmy Choo, and Judith Ripka. Temperley is one of my favorites."

StyleList: "What shows are you looking forward to for fashion week?"

Rossum: "I'm hoping to see Carolina Hererra, Marchesa, and Narciso Rodriguez."

StyleList: "Any beauty and style tricks you can share with us?"

Rossum: "Get a lot of sleep, and always have a convertible bra!"

For more celeb beauty and fashion advice, keep reading! Olivia Palermo of "The Hills" shared her secret to porcelain skin: "Stay out of the sun, and sun hat. I really preserve my skin and think that it's important to do at such a young age."

Kelly Bensimon of "The Real Housewives of NYC" shared the secret to her rock-hard body (hint: it's genetics): "You know it's funny, I don't have any stretch marks. When I was pregnant, I didn't do any exercise," she said. As for her diet: "I'm from the Midwest so I eat a lot of steak, a lot of potatoes. I eat very, very, very well. I never, ever skip a meal."

And finally, Jessica Gomes, super-gorgeous Sports Illustrated swimsuit model, shared her pre-shoot beauty routine: "I have facials by Amore Pacific, and also Christine Chin. I just get a lot of rest and put a moisture mask on my face before I go to sleep and I leave it on so I'm nice, supple and de-bloated."

If you haven't gotten enough of a celeb fix for the day, check out our collection of wacky outfits that our favorite stars recently stepped out in.