High School Musical starlet Ashley Tisdale has rubbished reports she's had more plastic surgery.

Rumours surfaced last week that the 22-year-old – who had a nose job last November to correct a deviated septum and shave off a couple of bumps from when she fractured her nose as a teen – had had further work on her snout.

"People are saying I had another nose job and I did not. That's ridiculous," she tells People.

"I was away in New Zealand filming a movie and so people think I went away to have more work done. But I didn't."

Ashley also hit back at those who criticized her for going under the knife to change her appearance at such a tender age.

"[Tabloids] have doctors talk about what they think I did with my surgery, but they did not examine me," she says. "They don't know what I have inside my nose."

As for those whispers that she’s also gone in for breast enlargement surgery?

"Look at me," she says, laughing. "Does it look like it to you? No! It's ridiculous. I'm not for plastic surgery. I'm not going to get another surgery.

"I can promise you that."

Will Ashley's words come back to haunt her?