Arianny Celeste & Topless Friend Slaying Beaches in the Bahamas

Arianny Celeste and her equally hot homegirls are knocking out the beaches in the Bahamas right now ... and tops are optional.

Unclear where the UFC Octagon Girl's hangin' loose in the video ... but Arianny and friends are clearly feelin' themselves, jammin' out to Manu Chao's old-school track about loving life (and weed).

If you like what you hear, Celeste -- an aspiring recording artist -- says you can cop her new single that drops on Friday.

Or ... you can just drink in her other talents. Your call.