Matt Damon, 49, shows off his muscled physique as he goes shirtless in wetsuit for surfing in Malibu

Alessandra Ambrosio showcases her svelte physique in a dazzling gold bikini as she hangs in Malibu

Cara Santana shows off her taut bod in black activewear as she makes a gym run in LA

Bachelor host Osher Gunsberg reveals the reason he won't go shirtless on Instagram