The 41-year-old actress tweeted about the unusual gathering on Sunday, writing, "Having a party today . . . ex-wife No. 2 (me) is having ex-wife No. 3 (Brooke) birthday party at my house . . . oh and our ex-husband will be here. How's your Sunday?"
According to E! News, the exes and all their children helped Mueller celebrate her 35th birthday Sunday along with family and friends.