Taping the girls in lieu of a bra the best way to get support + lift in a backless outfit & trust me they are not going anywhere with this heavy duty support holding them in place , Tape for the exact one I use in my bi0 , Shona Joy La Lune Circle Sleeve Backless Maxi Dress in Cream REVOLVE RELIRELIA Sticky Silicone Bra Self Adhesive, Strapless, Backless, Reusable Push Up Bra For Women No Strap Silicone Bra my holy grail for any backless or low cut necklines! linked in my bio for you the exact one I use It takes a little bit of practice so make Shona Joy, La Lune Backless Maxi Wedding Dress Save 46% Stillwhite