Avril Lavigne cuts a casual figure in T-shirt and ripped denim while on a motorcycle ride in Malibu

John Mellencamp shares a laugh with a mystery woman during a romantic beach stroll in Malibu

Bromance! Good buds Chris Martin and Gavin Rossdale have a dude date in Malibu

Avril Lavigne sparks boob job rumors as she shows off VERY busty look while going braless in top