The blonde teenager looks unrecognisable as she dons a brunette bobbed wig for her new promo Gravity.
In a feathered mini-dress, thigh-high boots and heavy make-up, Lott looks a world away from her usual style of cute mini-dresses and hippie hairbands.
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Whose that girl? Pixie Lott looks unrecognisable in a brunette wig in the video for new single Gravity
Gravity, the fourth single from her debut album Turn It Up, tells the story of a woman fighting hard to leave her lover, but keeps getting pulled back to him, just like gravity.
In the video, Pixie tries her hand at ballet, contemporary and burlesque dancing in a selection of different outfits.
Getting feathered: Lott frolics with an oversized feather boa as she dances in her thigh-high kinky boots
Take off: Lott looks like she's ready to defying gravity and fly like a bird
Blonde ambition: Lott with her usual long blonde hair last week
In the past eight months, Lott has had two numbers ones with Mama Do (Uh Oh, Uh Oh) and Boys & Girls and a number 12 hit with her ballad Cry Me Out.
The 19-year-old is preparing for the Brit Awards later this month, where she is up for three Brits Awards.
She has been nominated for British Female Solo Artist, British Breakthrough Act and British Single at the ceremony, which takes place on February 16.
Lott attended the awards herself two years ago when she was a student at the Italia Conti stage school.
She recalled: 'They invite stage schools to fill the audience, so two years ago, when Amy Winehouse performed, I was there, screaming with my friends in the rehearsals.
'The bit on the floor is where the kids go and the bit above is where they have the tables, so we were all looking up going, “Wow...” I had no idea that the year after I’d be up there.’
Meanwhile, Lott admitted she is thinking of getting a tattoo in honour of her fans after seeing Lady GaGa's new etching last week.
She said: 'I was thinking of getting a tattoo but I don't want to get it where you can see it - I could get a tattoo for my fans like Lady GaGa did.'
Going to the dark side: Lott goes for the dramatic look with her fake eyelashes and dark red lipstick
Tutu much: Lott dances in a black tutu with two female backing dancers
