What volume does Tohru from Fruits Basket, buy a swimsuit?

Question

I Can't remember and I've been trying to find it. Help please?!?!

Answer 1

They actually buy it for her in book 7. But you don't get to see her wear until book 10.

Answer 2

The Buying of the swimsuit takes place in Volume 7! After a trip to the local pool Uo and Hana decide to buy Tohru a bathing suit to replace the middle school one she still wears. They recruit the Sohma boys to help them choose one. A bit of Uo's past is revealed surrounding Tohru's mother. Uo's past is gone into, her developing friendship with Tohru and her mother, Kyoko, and her gang member days.

But Tohru wears the swimsuit in volume 10 when she goes out with the Sohma family! Hope this Helps!