Alessandra Ambrosio flashes toned midriff during hike with a muscly male pal in Malibu

Alessandra Ambrosio runs errands arm-in-arm with mystery man

Gerard Butler plays a few games of tennis before heading to a mall for a smoothie in Malibu

Kaia Gerber stuns in sandy swimwear for Malibu shoot and reveals the first line of her future novel