LPT: Flowers are a perfectly nice Valentine's gift. Lingerie is highly risky.
This one is especially for the sweaty, panicked dudes currently prowling through Victoria's Secret in a state of growing terror. Flowers are fine. Flowers are lovely. Flowers are available everywhere, can be as simple or elaborate as you want, and you don't have to worry about fit.
If you really want to get your girl lingerie, take her shopping and let her pick something she likes. For the love of Cthulhu, don't try to guess her size. You WILL get in trouble, and if you choose something uncomfortable, she probably won't wear it. #entertainment