Before July 27th, 2021, Invisible Lift inserts and Demi Boosts only came in one size (now size "Small"). We have since added a new size “Medium” to both insert styles and "X-Small" for Demi Boost Inserts to give you more options. We plan to release even more sizes in the future to provide the perfect fit for every size! For Demi Boost, size X-Small will be sent to everyone who ordered size AA; size Small will be sent to everyone who ordered size A, B, C; and size Medium will be shipped for sizes D and E. For Invisible Lift, size Small will be sent to everyone who ordered sizes AA, A, B, C, and size Medium will be shipped for sizes D, E, F.