Many customers message me that they like to wear sports bras, so it's worth a note about them here to ensure they are working with you and not against you.
If hold is your main priority rather than look, they can indeed be perfect. A sports bra is there to hold breasts in place with more compression than a standard bra, which can give you real confidence in the hold for playing sport, or general wear. If this isn't your goal however, you may find your assets are not as impressive as they could be. Sports bras support by squishing the breasts/breast forms back against you; They are tight, elasticated and usually thick for good resistance and hold. If your goal is to make your breasts project from you as much as possible, to bounce, or to be pert, you may find a high-support sports bra hinders that. Sports bras do however come in different amounts of hold, usually light, mid or high support. The more support, the more squishing you will find, but many light sports bras are actually very similar to bras. If using a high support sports bras, sometimes the breast can be pushed up a little for a cleavage look, which can be great, but when using high support bras you must be very careful not to compress the breasts too much. The pressure and resulting stress on the breast form can of course cause them to burst if it is too great.
If you really struggle with underwires, a light support sports bra may work well for you. The tend to have better bands around the body, supporting your breast forms much better, so they may be worth a try for you.