But it seems her friend, fashion designer Roberto Cavalli, didn't get the memo - releasing a heavily airbrushed version of her image wearing one of this designs from her Mrs Carter World Tour.
The image portrays Beyonce as an elongated caricature of herself, with cartoon-length legs and extremely thin limbs.
Beyonce has always been open about how hard she works to keep her bootylicious bod in shape, and she's proud of her healthy figure and realistic, womanly curves - so it's surprising to see her represented as an identikit celebrity thinster.
In the past she has explained: "I'm not one of those people who doesn't have to work at it. I can't eat what I want, and I can't not go to the gym.
"There are no quick, easy secrets. The truth is, it's a lot of sacrifice. It's more about your mental strength than your physical strength.
Rumour has it Bey, who is married to Jay-Z and has a 16-month old daughter Blue Ivy, hit the roof when she discovered H&M had doctored the original images from her recent swimwear campaign. The singer reportedly refused to sign off on the pictures until she was sure they were the originals.
Robert Cavalli sent out this image in a press release, but seeing the original picture, we know which one we prefer.
The 72-year-old Italian designer has dressed Beyonce many times, so he knows exactly how to flatter her figure. But quite why he's chosen to portray her so unrealistically is unclear.
It's ultimately frustrating that a poster girl for sensible eating and healthy body image has been used in this way.