Article continues below advertisementKylie Jenner served body for her 28th birthday.The Kardashians star stunned in a low-cut black crop top with sheer, billowy sleeves on Saturday, August 9.Article continues below advertisementSource: @kyliejenner/InstagramKylie Jenner showed her cleavage in a V-neck top.Jenner bared her belly in the tiny black top, which she paired with jeans, flip-flops and a Western-style black buckle belt. She posed in her driveway and glanced downward as the sun illuminated her long, black locks.