Oh sure, they have pasties that you can buy and apply, in case you've never tried it, it's the equivalent of double sided tape, you lean forward, hope your girls are perky, TAPE them up under your armpits and hope that you don't sweat.
It's fun stuff, except for the part that when you remove them it's the equivalent of ripping a bandaid off a cut, only
Some thread that matches your dress/top
a few pins
an Old bra
This one is pretty simple ladies, put your old bra in place and pin it securely. Here's the tricky part, make sure that the bra is exactly where you want it, you don't want to be, um.. lopsided, if you get my drift.
Once you're confident that the bra is where you want it, trim off the straps, you won't be needing those, then apply a few selected hand stitches to the bra, securing it in place so that it will remain completely hidden, yet still effective.
PS. If you're REALLY in a hurry, Hot glue will work.. and last about 4 hours of intense dancing, twirling, spinning before things start to come.. undone. Don't ask me how I know, I just know.