Kourtney Kardashian All Smiles Amid News of Younes Split

Kourtney Kardashian appears to be laughing off her breakup with Younes Bendjima -- literally, she couldn't stop smiling while hanging with her kid and Kim Tuesday.

Kourt surfaced in Century City after TMZ broke the story that she and her model BF had split recently -- and after photos of her now-ex showed him boo'd up with another chick ... who he called just a friend.

She doesn't seem to have a care in the world by the way she's carrying herself -- confident, sexy, and, more importantly, HAPPY, with her daughter Penelope and sis nearby. They were also joined by Miami mogul David Grutman, who was tagging along for the (escalator) ride.