Nicole Richie Attends a Madonna Concert | Pictures

Nicole Richie joined a group of girlfriends for Madonna's show in LA last night. Madonna's hosted a series of shows in LA this week, with stars like Neil Patrick Harris and Jessica Alba stepping out to see her tour in support of her latest album MDNA. Prior to checking out the concert, Nicole shared a photo of one of her designs on Madonna herself — Madonna wore a House of Harlow necklace for the cover art accompanying her 2009 single Celebration. It was a big day for Nicole since, in addition to her ladies' night, she and her family got a new dog! Nicole welcomed the new addition with her typical wit, tweeting, "Getting a new dog today. He lays around with a boner and scratches himself all day long . . . so I guess I'm getting a second husband."