You can wear a normal none wired bra, i got one at 3 weeks for a christening an it was really comfortable and supportive an will cause you no problems at all an just a normal bra to cover up. Personally i think going braless at 3 weeks is abit careless you have paid alot of money for them an there pocket is not healed yet so they need the support of a bra even if it is just for a few hours. Going without one could cause damage to the pockets an its just not worth the risk xx