Miley Cyrus celebrated her 18th birthday by experimenting with a bong and catching a case of the giggles -- but sources say she was not smoking marijuana.

Watch The Video

The video was shot during a party at Miley's L.A. area home 5 days after her 18th birthday.
According to a source connected with Miley ... the smoke filling the bong is a natural herb called salvia which has psychedelic qualities. Possession of salvia is legal in California.


As for the video ... the source tells us it was shot by one of Miley's friends -- and the theory is someone stole or copied the video from that friend's camera.




Source: Tmz

Young Fashionistas

Who says high fashion is just for grown-ups? These young stars are creating their own signature style, and for some of them it's just in their genes.

Willow Smith

Willow Smith
She may have been born on Halloween, but there is nothing scary about this 10-year-old star's fashion sense. Maybe she got it from her stylish parents.

Taylor Lautner

Taylor Lautner
This stylish 18-year-old has a whole lot of fans on Team Jacob. His physical transformation for the "Twilight" films is still the talk of the town.

Justin Bieber

Justin Bieber
This 16-year-old pop phenomenon is known for his catchy hooks and a sense of style that drives his tween fans crazy.

Shiloh Jolie-Pitt

Shiloh Jolie-Pitt
The first biological child of her famous parents, 4-year-old Shiloh is already getting attention for her tomboy-chic style.

Selena Gomez

Selena Gomez
This 18-year-old Disney darling has been in the spotlight since age 7, and her red-carpet looks always get raves.

Nick Jonas

Nick Jonas
The youngest Jonas has remade his style over the years while touring with his brothers. Now 18, he still loves to make a fashion statement.

Keke Palmer

Keke Palmer
Since her star turn in "Akeelah and the Bee," 17-year-old Keke has been busy with her music and making fashion-forward choices.

Kylie & Kendall Jenner

Kylie & Kendall Jenner
Kylie, 13, and Kendall, 15, are the youngest siblings of their reality-star sisters. Look for their latest photo shoot in the February issue of Teen Vogue.

Miley Cyrus

Miley Cyrus
Love it or hate it, 18-year-old Miley likes to push the boundaries with her fashion choices. Wherever she goes, all eyes are on her, not her famous dad.

Jaden Smith

Jaden Smith
Jaden's sense of style seems to be in his genes. Like his younger sister, he takes after their talented parents and is turning heads at the tender age of 12.
Source: specials.MSN