Duff and 7-month-old Luca stick together in L.A. Plus: Jenna Dewan-Tatum, Brad Pitt, Sarah Jessica Parker and more

FLY GIRL

After chatting with Ellen DeGeneres, Rihanna kicks off her 777 tour in Los Angeles on Wednesday, hopping aboard a plane that will take her to seven countries in seven days for seven shows in support of her new album, Unapologetic.