Lindsay Lohan‘s little sister Ali Lohan is laughing off rumors that she had plastic surgery.

The 17-year-old was the on the receiving end of a lot of backlash when photos of her looking like a totally different person first popped up on the Internet after she signed with a modeling agency.

But Aliana tells Page Six Magazine in a brand new cover story that those rumors are completely ridiculous.

“I was cracking up. Because, like, when would I do that? I’m 17 years old,”” Ali insisted. “That’s not legal! I would need my mother’s signature, and do you think my mom would ever sign off on that? No!”

In addition to calling plastic surgery “not the right thing to do,” she said rumors claiming that she went under the knife are “stupid. It’s absolutely not true.”

Ali also admits that her sister is the perfect example of what NOT to do when it comes to drugs and alcohol.

“I’m lucky enough that I had my sister to learn from. I’ve seen people do it to her, so I’ve learned to be like, ‘That’s stupid, no.’ That’s why me and Lindsay are also so close, because we’re able to talk about those things together,” she explained.

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