MLB phenom Paul Skenes got a special shoutout from his hot girlfriend for his 23rd birthday ... a friendly reminder of how good it is to be the Pittsburgh Pirates pitcher.
Former LSU gymnast, internet sensation and S.I. Swimsuit cover model Livvy Dunne shared the romantic post in honor of her man's big day on Thursday ... saying, "Happy birthday little baby @paulskenes ud83eudd0dud83cudf82"
Dunne also published some lovey dovey snaps of their time together -- a fancy sunset dinner, getting ready for a formal outing, hanging at a Tigers game and flying on a private jet.