Miley Cyrus lights up once again, but at least it's not weed this time. 

The pop tart was spotted Thursday taking a cigarette break inside a rental vehicle in Philadelphia. While Cyrus' new platinum Twiggy-like do is most definitely fashion forward, we're not sure if smoker's breath will be considered quite so fashionable.

Hope she popped some gum before smooching husband-to-be Liam Hemsworth. She gushed, "He loves [my haircut]," because "... he said I look the happiest he's seen me in a while :) he likes seeing my eyes more."

Cyrus is no stranger to attention for smoking. During her 19th birthday bash, the former Disney starlet claimed to be a "stoner."

"You know you're a stoner when friends make you a Bob Marley cake -- you know you smoke way too much f***in' weed," Cyrus proclaimed.

But friend Kelly Osbourne quickly jumped to the tween's defense, joking that she had a salvia problem instead.

She later took to her Twitter page to further state her case, although the damage had already been done.

"Let me make something very clear after @MileyCyrus salvia incident we started calling her bob miley as a JOKE! the cake was also...A JOKE! it makes me sick that @MileyCyrus so called 'friends' would sell her out and lead people 2 believe she is someone that she is not! ... u guys if @MileyCyrus is not recording/filming/touring she is works everyday how could she possible do all that if she was a stoner! #think"