Leslie Mann joined her co-star Olivia Wilde at the “The Change-Up” Premiere After Party at the Hammer Museum in LA last night.

I adore her Monique Lhuillier Fall 2010 flirty strapless mini dress.

The dusty rose floral satin embroidered cocktail dress was accented with a gold beaded belt which is perfectly complemented with a matching clutch.

Whilst the hair and shoes have stayed the same, Leslie opted for a lighter shade of lippie as she wore red to the premiere.

Credit: Getty & Style.com