The 27 best celebrity bikini pictures of 2021

From Christina Aguilera to the entire Kardashian-Jenner family, check out some of the hottest bikini shots of the year (so far) -- including one of Khloe Kardashian that just sparked some SERIOUS engagement talk.

From Christina Aguilera to the entire Kardashian-Jenner family, check out some of the hottest bikini shots of the year (so far) -- including one of Khloe Kardashian that just sparked some SERIOUS engagement talk.