Lauren Silverman I Have a Resilient Vagina!

2/17/2014 3:32 PM PST

Simon Cowell's Baby Mama Lauren Silverman: I Have a Resilient Vagina!

Forget the miracle of childbirth ... Lauren Silverman has a miraculous vag ... briskly walking through a department store 3 days after giving birth.

What makes it even more spectacular is that she's walking around in skintight leather pants.

Mind you baby Eric made his debut at 6 lbs 7 oz.

This is Lauren's second kid ... so maybe it's a little easier -- but still, she's a true champ!