Nah, ^_^ as long as it isn't remotely visible, you haven't got a problem (I'd bet you shouldn't wear white). If its longer than a normal camisole, then just wear a longer t-shirt or wear long sleeves...but I'm pretty sure you could get away with a lot.
Your lucky..I haven't even wore panties under my boxers yet..afraid I might have an unexpected gym class.
Also, since I have no clothes of my own..my sisters clothes are sooo small..shes only like 5'4" and I'm 5'10"..I hate it..

Some of my moms clothes fit better, but my sisters are wayyyyy better!

My cousin is about the same height as me, and size. She will probably msuggle some old clothes of hers or clothes she doesn't wear a lot, into my back pack next time I go there.

Edit: Lol sorry..I keep bringing stuff up about
myself in everyones topics.
Sorry