Jennifer Lopez and Marc Anthony touched down in LA yesterday after a weekend getaway with their children Max and Emme in Cabo. The reason for the trip was Jennifer's 41st birthday, which was on Saturday. J Lo broke from the celebrating to fit in a run along the beach, and all her hard work isn't going unappreciated — she was spotted checking out the reflection of her famous backside on her family's minivan at the airport. Jennifer's quick vacation also gave her a break from dealing with the fallout after canceling a controversial concert in a politically sensitive area of Cyprus.