I've had this pattern for years. Kwik Sew 3153.
I bought it for the wrap and have never made the suit until just this past week. And why, you might ask, am I still making swimsuits in October in Minnesota? Well, it was 84 degrees here the other day, for the entire week. But my two oldest girls joined the HS swim team (7th thru 12th grade are all combined together) this year and the season doesn't end 'til the end of October. And when you're in chlorine every day it kind of does a number on your suits.
This suit is actually for my friend Andrea's 13 yr. old daughter, A., who is also on the swim team. She likes my suits better than Speedo's. Thank you, A.!