Calling all daytime fans! The Young and the Restless' Tracey Bregman (Lauren Fenmore) and The Bold and the Beautiful's Katherine Kelly Lang (Brooke Logan) have the breast... er, BEST news: they've personally designed Rhonda Shear Ahh Bras as part of an online charity auction benefiting breast cancer research.

Fans can go to Rhondashear.com now through Friday, October 30, and bid on the daytime stars' creations along with several other celebrity-designed bras from people like Mario Lopez, Charlotte Lambert, and Tyra Banks as part of the Rhonda Shear Celebrity Ahh Bra Breast Cancer Auction.

Bregman's pink zipper-covered bra is in honor of her grandmother, who battled breast cancer. Lang's pink sports style bra is personalized with signatures from her B&B cast members.

What do you think of Bregman and Lang's bra designs? Have you or anyone you know battled breast cancer? We want to hear from you -- so drop your comments in the Comments section below, tweet about it on Twitter, share it on Facebook, or chat about it on our Message Boards.

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