Wear a strapless bra
Use a convertible bra and remove the straps
Use adhesive bra cups
Use bra tape to secure the cups
Use a bustier or corset
Choose a bra with a wide underband and silicone grip
Tighten the band for better support
Add clear straps if allowed
Sew or attach a strapless conversion kit
Use fashion tape to keep the bra in place