Jamie Lynn's Babydaddy Is All Grown Up

And apparently, he can't afford a new pair of non-ripped jeans!

Casey Aldridge - who has a baby (little Maddie) with Britney Spears' younger sister Jamie Lynn - was spotted shopping in Calabasas Wednesday afternoon, showing off his underwear...

The young dad recently posted pix online of him and Jamie and Maddie and they all look like one big happy family again! Nice to know that the couple found a way to reunite. Word on the street is that the two also attended the Lady Gaga concert last night with big sis Britney. Sounds fun!

Speaking of Jamie Lynn, guess who was in the backseat of Brit's car on her way to the studio to rehearse for Glee yesterday?

None other than Jamie Lynn! How nice for Brit to have some of her fam in town this week.