Colleen will debut her new Swim Collection on 4/13 at 7pm (ET). Her FB posts says she was a competitive swimmer for many years (even in the Junior Olympics!).
Here are some of her items:
#1 Bathing Suit (Colleen says to size up on this one)

#2 Sarong -- made after one of her sunset photos from her back yard

#3 Metallic Coverup that doubles as a tunic

I love the metallic tunic. I'll wait to see what else she brings in the show.