I was advised to wear sports bras initially although didnt for some 9 months until scaring and radiation burning had subsided hence took it very gently when doing exercise with my 18d boobs. Actually was even for a few months until radiation treatment!
surgeon told me to wear underwire bras again at I guess the 2 year mark. i was sooo glad to not have to keep fidgetting to keep the darn thing in place. Do have to be very careful when purchasing since some models rub on my surgical scar on left of left boob. the first ones I bought were from target and had padding on shoulders and over the underwire. still have one left 7 years later. ALthough I did show it to the berlei bra focus group day, it seems not to be an option they wish to use.
Carol