'X Factor' star Diamond White goes nearly naked to Grammy Awards

She definitely has grown up!

Diamond White went from adorable "X Factor" contestant in 2012 to totally grown up teenager in a matter of minutes it seems. The now 17-year-old singer hit the Grammy Awards on Monday night in a nearly see-through black and white gown -- and it definitely turned heads.

The dress, which was sheer throughout, had white embellishments that covered up her lady parts, including her boobs and rear end, but it didn't cover up much else. She polished off the eye-catching look wit a sleek ponytail and red lips. It was definitely a mature look for a teenager and was -- err -- surprising.

Can you believe this is what she looked like back in 2012 when she was being mentored by Britney Spears?