Fergie: Back from Petra Ecclestone's Wedding!

Fergie wears a sheer dress while landing at LAX Airport on Sunday (August 28) in Los Angeles.

The 36-year-old singer flew in from Italy, where she performed with her her Black Eyed Peas bandmates at British heiress Petra Ecclestone and businessman James Stunt‘s wedding over the weekend.

PHOTOS: Check out the latest pics of Fergie

BEP, as well as Eric Clapton, sang for 350 guests at Castello Orsini-Odescalchi – the same castle where Tom Cruise and Katie Holmes married in 2006 – People reports.

FYI: Petra is the 22-year-old daughter of billionaire Formula One CEO Bernie Ecclestone who recently purchased Candy Spelling‘s L.A. mansion for $85 million!