Best of the Weekend: Gossip Girl's 100th Episode Soiree, Beyoncé Debuts Her DVD, and More!

Aside from the action at last night's AMAs, the weekend was filled with parties and premieres — and with each one, a bevy of celebrity beauties walking the red carpet. The cast of Gossip Girl gathered to toast their 100th episode in style, while Beyoncé hosted her own soiree to celebrate the launch of her new DVD. Meanwhile, across the pond, a chic Emma Watson stepped out for the premiere of My Week With Marilyn. Among the styled crowd, we spotted Blake Lively in a flirty Marchesa frock hitting the scene with Leighton Meester in Balmain, and Gossip Girl fan Chloë Moretz in Stella McCartney. Meanwhile, glowing mom-to-be Beyoncé slipped into a curve-hugging black gown for her celebration. There's more in store, like Nicole Richie in a sparkly Halston frock — just click on for the best of this weekend's red carpets, then tell us your pick for most Fab in the comments.

Source: Best of the Weekend: Gossip Girl's 100th Episode Soiree, Beyoncé Debuts Her DVD, and More!