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Pretty is as pretty does!

With Breast Cancer Awareness month in full swing, Hollywood is thinking pink, and celebrities are hitting their favorite retailers to shop for the cause.

Amy Smart donned LOFT's limited-edition 'Support' T-shirt ($40, while running errands in Los Angeles on September 15. $5 from each sale goes to the Breast Cancer Research Foundation.

Other stylish finds that give back include Kim Kardashian's fave La Mer lip balm, Selena Gomez's tried-and-true Tory Burch flats and Jennifer Aniston's go-to OPI nail polish.

Elizabeth Hurley has made several stops throughout Europe for Estee Lauder's 2011 BCA Campaign. "Do regular breast exams!" urges the Gossip Girl star, who's the Estee Lauder celeb spokeswoman on the tour.

Click through to see what other pretty-in-pink picks A-listers are loving.