PINT-SIZED beauty Vanessa Hudgens admits she is struggling with her fame, due to the High School Musical series and her romance with her co-star.

The world’s most famous 19-year-old brunette said the spiralling interest in her personal life meant her private time was no longer hers to enjoy.

Hudgens and boyfriend Efron were snapped this week as they made the most of some down-time in their Sydney hotel room.

“I mean, put yourself in my situation: people who you do not know taking pictures of you in your own room!” Hudgens said.

“It’s obnoxious and invasive, and I don’t know why they would do it.”

Hudgens said the constant attention was becoming overwhelming.

“We have had a few crazy premieres, including in Mexico, where there were about 140 security guards there holding barricades up around us. I’m kind of claustrophobic, so being caged in every so often gets kind of frightening.”

She avoids going out partying. “I don’t go clubbing, anyway; it just doesn’t seem like fun to me,” she says.

She prefers to stay at home to enjoy her most recent hobby — cooking.

Hudgens was relaxed during our interview, sipping on a Starbucks coffee and eating a Time Out bar.

When the trio arrived in town on Tuesday night, she told us she headed straight for the hotel gym.

“I had to, so I can eat things like this!” she laughed.

We doubt she has to worry about her weight — Hudgens looked smashing in her pair of new black Sass & Bide tights.