I went to boot camp earlier this year. The CC's had no problem with front closures because I had 3 of them. When you first get to boot camp, you'll put everything you came with on the table (I recommend organizing your bag prior to make it easier) and just fold your bras and underwear neatly. They didn't really look at them in detail; they just made sure they were white.
And feel free to ask any other questions, female-specific or not