Kristen Bell and Jane Seymour attend the Alzheimer's Association's "A Night At Sardi's" celebrity musical revue benefit dinner; Analeigh Tipton, Aubrye Plaza and Maggie Grace hit the premiere of Damsels In Distress; Lacoste celebrates the launch of their women's Spring/Summer 2012 collection with a Sunset Tower soiree and special guests Malin Akerman, Jesse Metcalfe and Jenna Elfman—it was another bustling, star-studded Wednesday night in L.A. and we've got all the details in this installment of Last Night's Parties!

[Clockwise from left: Megalyn Echikunwoke, Aubrey Plaza, Greta Gerwig, Carrie MacLemore, Analeigh Tipton via; Ashley Madekwe, Christa B. Allen, Peta Murgatroyd via; Lacoste event at Sunset Tower via]