The Amanda Bynes situation just keeps getting uglier.

The former child star on Sunday admitted via Twitter she had a nose job after her arrest late last month, while taking a shot at her concerned parents, Rick and Lynn.

"My dad is as ugly as RuPaul!" she tweeted Sunday. "So thankful I look nothing like you both! I had nose surgery after my mug shots so my nose and I are gorgeous!

The 27-year-old last month alluded to other procedures she's had in the past, writing on May 5: "The reason I've asked all magazines and blog