Miami Heat Players -- $500 Pedicure Date ... at Bev Hills Nail Salon

Lebron James' cuticles are going to look FABULOUS when he squares off against the Clippers tonight ... 'cause TMZ Sports has learned, LBJ and teammates dropped $500 at a Beverly Hills nail salon yesterday.

LeBron -- along with at least 3 other teammates including Ray Allen, Roger Mason Jr. and Udonis Haslem -- hit up Bella Nails and treated themselves to manis, pedis, and massages.

King James proudly posted the photo evidence online right after the outing ... with the explanatory caption "Have to take care of your dogs Men! It's part of our life blood!"

Pampering -- it's not just for chicks anymore.