Miley Cyrus wants 20 million Twitter followers by 2015.

The 21-year-old singer is active on social media and on Monday she made the announcement, telling fans she's crossing her fingers her numbers will jump by more than three million within the next 11 months.

"Hoping for 20 million followers by 2015," Miley tweeted.

Miley also announced a personal milestone, revealing she's successfully kicked cigarettes for the last eight weeks.

"2 months no cigs #proudofmyself," the pop star wrote.

Despite her seemingly good girl behaviour, Miley's comments come shortly after the singer addressed her critics in a candid interview with America's W magazine, insisting she has nothing to prove.

"Anyone that hates on you is below you, because they're just jealous of what you have," she told interviewer Ronan Farrow.

Miley also talked about her style icons, including Madonna, Blondie and Joan Jett.

But the pop star had some sharp words ready when addressing her peers.

"I just don't get what half the girls are wearing. Everyone to me seems like Vanna White," she vented.

"I'm trying to tell girls, like, '[expletive] that. You don't have to wear makeup. You don't have to have long blonde hair and big [expletive]. That's not what it's about. It's, like, personal style.' I like that I'm associated with sexuality and the kind of punk-rock [expletive] where we just don't care."

Miley is preparing to hit the road for her Bangerz world tour, scheduled to kick off on February 14.

But the defiant star insists she's not looking for anyone's approval.

"You know, I've made my money. If no one buys my album, cool. It's fine. I've got a house, and I've got dogs that I love. I don't need anything else," she said.

The March issue of W magazine, featuring Miley on the cover, hits newsstands February 8.