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Buy one get one free on all women's swimwear at Tilly's.

Bottoms start at just $4.97 and tops start at $14.97.

Enter code "BTS20" to get 20% off one item or code "FREESHIPBTS" to get free shipping on your order. Codes can't be stacked, so use the one that yields the greatest discount.

Shipping is $6 or free for orders $79 or more.