And apparently that’s okay, if you are a 25-year-old model or a reality TV star like Kylie Jenner who is famous for a lip gloss range and looking like a cardboard cutout of her sister Kim – albeit a younger, shinier version.
But not if you are a 57-year-old popstar Madonna who turned up in a revealing Givenchy outfit that showed her bum cheeks and her breasts, covered with some black lace.
I wasn't surprised Madonna turned up showing her bum. I would have been disappointed if she hadn't. Madonna's career has always been about theatre. And costume. She has reinvented her look countless times and it's almost always been outrageous.
I also wasn't surprised the outfit drew criticism from people who suggested she was too old and should be embarrassed wearing that sort of outfit - even at the most crazy fashion event of the year.
Monique Bowley just wanted to know how she was going to go to the toilet. Post continues below.
But you know what? If you were one of those people rolling your eyes and telling Madonna to dress her age, it says something far more embarrassing about you than it does about her.
You need people in your life who will tell you the truth, otherwise you'll end up like Madonna. pic.twitter.com/5VeRKJX57Z
— TracieEganMorrissey (@TracieMorrissey) May 3, 2016