Rachel BilsonRachel BilsonWell, what have we here Rachel Bilson?

The OC star is looking hot to trot but who's the lucky man?

Well, there isn't one...

The sexy starlet glammed up to the max purely to attend the Chanel and P.S. ARTS party in Beverly Hills last night.

And she wasn't the only one.

Think Sarah Michelle Gellar, Kate Beckinsale and Hilary Duff...

With all those stars dressed to kill the party turned into a bit of a fashionista frenzy.

It's a wonder how they coped - after all, mingling at the same time as battling it out in the fashion stakes is very tiring...

Click on our Chanel picture gallery to watch the schmoozing unfold.