Ashlee Simpson Approves of Jessica's New Lover

Ashlee Simpson at a private party in Cobalt Room

Ashlee Simpson has given sister Jessica's romance with guitarist John Mayer the thumbs up, insisting the John is "great" for the divorced blonde.

A pal tells People magazine, "Ashlee loves John. She thinks he is great for her. More importantly, Jess is happy."

Meanwhile, celebrity pal Christina Milian is thrilled for the couple: "This is a relationship that's not for the cameras. It's not about celebrity. It seems like they truly have an attraction to each other."