Kate Beckinsale Celebrates Husband Len Wiseman's Birthday with Ex Michael Sheen

Kate Beckinsale and her husband Len Wiseman leave the Chateau Marmont after celebrating his 41st birthday on Tuesday (March 4) in West Hollywood, Calif.

The 40-year-old actress was also joined for the celebration by her ex-partner Michael Sheen, who recently started dating comedian Sarah Silverman.

A couple days earlier, Kate and Len looked super hot while walking the carpet at the Vanity Fair Oscars Party.

Also pictured inside: Kate arriving at a medical center with her assistant on Saturday (March 1) in Santa Monica.

FYI: Kate is wearing Freddy Wr.Up pants in Santa Monica.

15+ pictures inside of Kate Beckinsale with her current and former men…