Lindsay Lohan's little sis Ali thinks the plastic surgery rumors surrounding her are a laughing matter. However, we beg to differ. Over the last year, the 17-year-old aspiring model has shown drastic changes in her appearance, enough to get the rumor mill churning. But little Lohan says she's maintained her sense of humor through the controversy which has included talk of everything from eating disorders to surgery. Lohan tells Page Six that the rumors had her "cracking up." She adds, "Because, like, when would I do that (surgery)? I'm 17 years old. That's not legal! I would need my mother's signature, and do you think my mom would sign off on that? No! It's not the right thing to do." One thing she has changed is her name. She now prefers to go by the more mature moniker "Aliana." While Aliana plans on following in her sister's footsteps in the fame game, the similarities stop there. The teen admits, "I just say no [to drugs]. I'm lucky enough that I had my sister to learn from." That said, the siblings are still thisclose. Aliana confides the two have an extremely open relationship, "You can't trust anyone, so we talk to each other about everything. I admire how strong she is. That's why Lindsay and me are so close, because we're able to talk about those things together."