Kourtney Kardashian dresses in sweats... as BFF Larsa Pippen goes bra-less

Kourtney Kardashian and BFF Larsa Pippen took their kids to art class on Friday.

The Keeping Up With The Kardashians celebrity, 38, kept it casual in a sweatshirt and sweatpants while the former Real Housewives Of Miami castmember, 43, opted to go bra-less in a semi sheer jumpsuit. Her backless athletic-style one piece hugged her curves revealing her nipples and her buttocks thanks to its transparent fabric.

The mother-of-four wore her hair in braids, sported oversized reflective shades and carried a large black leather Gucci tote.

Larsa Pippen backless athletic-style one piece hugged her curves revealing her nipples and her buttocks thanks to its transparent fabric.The mother-of-four wore her hair in braids, sported oversized reflective shades and carried a large black leather Gucci tote.

Kourtney wore her long dark hair in a simple ponytail and carried a small black purse with a silver metal shoulder chain. She added a pair of small designer sunglasses and white trainers.

She was with daughter Penelope, five, and son Reign, two, the two youngest of her three children with ex boyfriend Scott Disick. She also shares son Mason, eight, with Scott.

Larsa brought along daughter Sophia, eight, as she and Kourtney took the kids to art class in Calabasas.

She also has three sons - Justin, 10, and twins Preston and Scottie Jr., 15, with hubby Scotty.