Evan Rachel Wood: Cocktail party with no cocktails

"I love that I am going to a cocktail party tonight, but I can't have any cocktails," tweeted Evan Rachel Wood on Tuesday night. "It's like a birthday with no cake."

But the actress, 25, appeared to make the best of her night, as she proudly cradled her bump at the Vanity Fair party for the opening of the TriBeCa Film Festival. She mingled with the stars including Sienna Miller, Karolina Kurkova and Robert De Niro.

Wood, who is expecting her first child in June, tied the knot with actor Jamie Bell during a small secret ceremony in California in October last year.