I chose a strapless trumpet style gown andI do not know what is the best option for under garments. I was thinking I would go the Spanx route since my dress is form fitting all the way to my mid thigh. However, I went to try on some options this weeknd and my trip left me feeling quite confused. Has anyone worn Spanx under a straspless dress? Do they stay up? I feel like what ever I choose will just end up slipping down and I will be tugging at it all night, Definitely not what I want to be doing. Is a corset or bustier my best bet? I have also been thinking about just having cups sewn into my dress but I am so confused. Suggestions ladies?