Bruce Jenner's New Chick -- She's Got Legs

We may have to plead no contest to over-reading, it sure seems like Bruce Jenner's new chick is sending an F-U message to Kris.

Ronda Kamihira got a little showy Friday night when she decided to post a pic of herself in a teddy with rose petals on a bed.

Unclear if this is an old picture ... or maybe something Bruce himself snapped ... but clearly thirsty Ronda wants to convince everyone she's hotter than any momager draped in Old Glory.

Gotta say ... the girl is all right, she's all right.