Jessica Simpson Celebrates Friend's Upcoming Wedding!

Jessica Simpson and fiance Eric Johnson attend a rehearsal dinner for engaged pals Bret Harrison and Lauren Zelman at Las Casuelas Nuevas restaurant on Friday (March 23) in Rancho Mirage, Calif.

The 31-year-old pregnant entertainer and fashionista was joined by her sis Ashlee Simpson with boyfriend Vincent Piazza.

Also in attendance at the rehearsal dinner was Adam Brody, Donald Faison and his fiancee CaCee Cobb.

There were over one hundred guests at the celebration that evening!

Jess recently threw her baby shower! Be sure to check out the pics of the happy day, where she was joined by some of her family and pals including Jessica Alba and Odette Annable.