Selena Gomez sideboob
Both Selena Gomez and Demi Lovato were on the unforgettable show.
Another interesting observation are the Selena Gomez eye bags that are visible under her eyes in the Before picture.
In some breast surgeries, the nipple shifts to an unnatural position due to movement or poor breast implant pocket.
Perhaps it is some illusion, camera angle, or the particular bra.