Ashlee and Pete's Rehearsal Dinner

On Friday night, the bride-to-be's big sis Jessica Simpson hosted a rehearsal dinner for the happy couple at her Beverly Hills Home. Guests included Nicole Richie and Joel Madden. Papa Joe Simpson arrived earlier in the day at 2:30 p.m. from the Simpson family home in Encino, where Ashlee and Pete will be married this weekend.

And so we wait, I'm sure madness with helicopters, police etc will be going on at the Simpson house today.

Why is Nicole Richie there though?