Beyonce's crazy in love with her own butt - and who can blame her?

BEYONCE slimmed down to a size 2 for the Grammys - and she celebrated by posting a spate of butt-focused Instagram pics.

Miss any of Bey's smoking Grammys performance? Don't worry - just head over to hr Instagram.

THINK Beyonce looked incredible at the Grammy Awards? You're not the only one - the singer herself seems pretty proud of her physique, if her spate of Instagram posts is anything to go by.

Following the January 26 ceremony, Beyonce posted no fewer than a dozen photos from her much-praised show opener - many of them focused on her very pert bum:

News_Module: Bey, you look fantastic

News_Module: OK now, nobody likes a show-off

News_Module: Put down the phone and step away gurl

News_Image_File: BEYONCE'S BUM IS TAKING OVER THE WORLD, SAVE YOURSELVES

Michael Costello, who designed the eye-catching white lace gown the Beyonce wore to the ceremony, has revealed that the woman who put 'Bootylicious' in the dictionary is now an ulta-slim size 2 (Australian size 6).

"The dress was just made to fit a sample mannequin. It's smaller than a size 4. She is tiny! That dress is at least a 2/4. She looks amazing. I just love the way it all came together," Project Runway contestant Costello told E! News.

Beyonce's slim-down comes after she and hubby Jay Z embarked on a '22 Day vegan challenge' last month, consuming no animal products in the lead-up to Christmas. The clean-eating diet no doubt helped her squeeze into the revealing black corset she wore to sing sultry new single Drunk in Love at the Grammys.

Beyonce's constant butt postage has no doubt kickstarted the new year's fitness plans of a few of her fans, as Aussie pop star - and devout Beyonce fan - Ricki-Lee Coulter pointed out.

News_Image_File: Aussie pop star Ricki-Lee can't get enough of that Beyonce butt.

Beyonce's notorious for documenting her every move - in a GQ interview last year it was revealed she keeps an enormous archival room in her house, filled with footage, photos and recordings from throughout her career. Presumably with all trace of Kelly Rowland carefully cropped out.

Beyonce, it's great that you have a behind you could bounce a coin off, but please stop plastering it all over Instagram.

Now if you'll excuse us, we're off to do squats and lunges from now until 2017.