It's prom weekend for a lot of high schools. That means it's a good time for parents to talk to their kids about being safe and the dangers of drinking and driving.

It's also a good time to remind them they're not as sneaky as they think they are. Sleek limos, fancy dresses and sharp tuxes aren't the only signs that prom season is here.

There's a new alcohol bra that actually has little compartments in it and there's a straw down the strap.

Authorities work hard to keep up with the latest trends among resourceful teenagers. The alcohol bra appears to have replaced another fad: sandals with a built in flask.

NBC