Kim Kardashian Showed Chyna How To Break The Internet

Kim Kardashian knows a thing or two about gettin' nekkid for photo shoots ... so it's no surprise she helped Blac Chyna navigate the frigid waters.

Chyna is PAPER Mag's September cover girl ... that means buck naked, and Kim was right there to coach her through the shoot. Kim arrived with Chyna, helped her strike poses and even picked out what some might call wardrobe.

Kim and Chyna were tight the entire day ... it was apparent to all they like each other.

Everyone remembers Kim's PAPER Mag shoot in 2014 -- so she's just keeping it all in the fam.