Pink Lady! Gaga steps out in brightly colored sweats on stroll with friend in Malibu

Shirley MacLaine, 87, stays active and enjoys a martini as she dines outdoors in Malibu with family

Rumer Willis flashes her flat belly in grey crop top and compression shorts during outing in Malibu

Caitlyn Jenner wears 'California' t-shirt  to run errands in Malibu