I bought this adorible halter, but couldn't wear a bra with it. I am using Justice's Strapless Bra here, but any bra will work just fine.
(I relize the bra is strap less, lol, but the back of the bra is higher than the back of the dress! Plus, is wickedly uncomferable!)
Turn dress inside out, and pin the bra (with straps cut off) to the lining. Try on and ajust as needed.
Pull your arm through the lining (till you can fell the very top) and begin to sew the bra to the dress. Be extra carful not to sew the outer layer!
Remove Pins as you go, I only sewed the sides, but larger busted 'gals might want to sew the whole thing up!
Rock your new dress!