Christie Brinkley, 66, sports crop top as she jokes about 'turning 50 for the 17th time'

Miley Cyrus showcases her abs in a black crop top and poses in cycling shorts on Instagram

Jessie J shows off old wardrobe treasures as she poses in 'stripper' heels and a racy mesh crop top

Ashley Benson looks comfy as she lounges on the rooftop in Alo sweats and a belly-baring crop top