What is my bra size? Andrea May 20, 2021 19:37 Updated To choose the right bra size look at the size guide to check the back and chest measurements corresponding to each size. Choose the closest size to your measurements. Related articles Size Chart: Bras, Panties and Bodyshapers I don't have my tracking number: What size panties do I have? Would you like to call our Contact Center? How I can know what size clothes to choose?