Victoria's Secret is offering an extra 25 - 40% off of select swim styles. This promotion appears to be good online; it's unclear if it will be going on in the stores that carry swim styles.
In addition, VS is also offering a dollars off promotion right now. You can get $20 off $100, $30 off $150, and $75 off $250. To take advantage of this offer, use the code MORESAVE when you checkout. This offer is only good online, and is good until May 14, 2009.