Miley Cyrus used social media to debut a new short pixie haircut to her fans.

The 19-year-old joined celebrity hairstylist Chris McMillan in tweeting a series of photos to show the transformation from her long locks to a new bob haircut.

The first announcement came from McMillan who tweeted a picture of his scissors getting ready to cut off her hair bun.

"Bye bun! Stay tuned!," he wrote.

Several hours later the "Hannah Montana" star tweeted the new haircut.

"Never felt more me in my whole life," she wrote.

She later sent a flurry of responses to her new haircut back and forth with her fans on Twitter.

"I think the most important thing a woman can have - next to talent, of course is her hairdresser." @ChrisMcMillan thanks duuuuude" 

"Someone just told me I'm prettier than Miley Cyrus."

"most successful Sally day EVER! ❤❤❤ I feel pretty ohhhh so pretty and gayyyy"

"❤❤❤ feeling so happy in my skin"

Cyrus' last tweet was a response to her fans with comments disapproving the look:

"my dad @billyraycyrus used to tell me "opinions are like ass holes every body has one" LOVE my hair ❤ feel so happy, pretty, and free"

Miley's newshort haircut is part of a dramatic transformation the former Disney star has been working on.

A week ago she tweeted a picture of a new hair color - she had it lightened by McMillan to blond platinum.

E! Online reported exclusively that Cyrus is set to appear on CBS' hit show "Two And A Half Men."

A source told the website that the former Disney star will guest star on several episodes playing a new girl who becomes the love interest of Jake Harper, played by Angus T. Jones.

Her character will be "sexy" and "rife with comedy," according to the source.

Cyrus is engaged to marry "Hunger Games" star Liam Hemsworth.

The couple met in 2009 on the set of the film they starred in together, "The Last Song." Helmsworth proposed to the pop star on May 31 with a 3.5-carat diamond ring.

Hemsworth will appear in the upcoming "Expendables 2" with Sylvester Stallone slated for release this week.

Liam, the former Australian model, is the younger brother to actor Chris Hemsworth who plays the title character in "Thor" and "The Avengers." Liam is currently filming "Paranoia" set for release in 2013.