'On The Floor' hitmaker Jennifer Lopez has admitted that she was shocked to hear about the 'bare flesh' ban at this year's GRAMMY Awards ceremony.

An email was sent out to the performers and hosts of the event, which took place last night (February 10), which stated that that overtly provocative and "problematic" outfits, which show "female breasts", "buttock crack" and "the genital region" would not be allowed:

"Please avoid exposing bare fleshy under curves of the buttocks and buttock crack.Bare sides or under curvature of the breasts is also problematic. Please avoid sheer see-through clothing that could possibly expose female breast nipples."

Speaking to Ryan Seacrest from the event, JLo confessed that the ban was a little extreme but went ahead with her daring outfit (shown left) as the memo didn't mention the showing of legs: "They said nothing about the legs! I thought I was being such a good girl! A little shoulder and a little leg, It (the memo) mentioned things I don't even say in my house around my children."

Other celebrities' outfits (pictured below) were demure and respecful following the warning.

Watch a red carpet interview with Lopez from the 2013 GRAMMY Awards here: