The amount of lift and enhancement that a push-up bra provides can vary depending on the style and fit of the bra, but it is generally designed to enhance the appearance of your breasts rather than significantly alter their size. Some push-up bras may add several inches to the appearance of your bust, while others may provide a more subtle lift. If you are looking for significant lift and enhancement, you may want to consider a bra with removable padding or inserts, or a bra with padded cups.