This one isn't complicated: it was Kate Hudson and Avril Lavigne!
Over the weekend, Canadian songwriter/producer David Foster married model Yolanda Hadid in front of friends, family and many famous faces.
Sources from the scene say they saw many a celeb walking around the Foster's fourth nupitals. Michael Buble crooned out a tune, Kenny G played saxophone from table to table and yes, Kate and Avril, who was Brody Jenner's plus-one to the affair, sang a duet!
How nice of them to be in the spirit of David's moment!
Oh yeah, someone else tried to be a part of the big day too: Samantha Ronson.
David's daughter Erin is close pals with Lindsay Lohan's ex, who at one point in the evening "tried to DJ, but was told no," according to an insider.
Whomp, whomp! No offense Sam, but David can afford to have Kenny G play at people's tables! He doesn't need a DJ!
[Image via WENN.]
Tags: avril lavigne, canada, daughter, david foster, duet, friends, kate hudson, lindsay lohan, married, producer, samantha ronson, songwriter, wedding, weekend