The 'Hard Out There' singer, 28, posted a picture of herself semi-naked with just her long hair and a lap top to protect her modesty!
Topless and wearing just a pair of knickers and a pair of high heels, Lily seems to be signing while looking at the computer screen.
Alongside the saucy picture, Lily wrote the caption: "Warming up in my pants, luckily @panosphair [hair stylist Panos Papandrianos] is there to document these dressing room moments."
With Lily no stranger to controversy, it's no surprise that the picture provoked a debate amongst her followers. Some defended her right to be naked, while others begged her to cover up!
Lily also shared a clothed picture - but it was hardly any less provocative.
In it, the Londoner is wearing a smokin' hot leather body suit with a cleavage-flashing low-cut top.
And it's no wonder the star is flaunting her petite frame... She's lost all her post-baby weight after having daughters Ethel, two, and Marnie, one.
However, Lily also proved she is not vain when she posted a bare-faced video message from her "lonely hotel room", documenting her takeaway dinner and foreign TV.
She is currently promoting and touring her new album, Sheezus.
What do you think of Lily Allen's topless selfie? Tell us below!
Watch the official video to Lily Allen's single 'Air Balloon':