Oh I get it now! Brilliant - thank you. Famous people are okay to wear short skirts because they are so utterly fantabulous and gorgeous.
Non-famous people should steer clear though, cos they're really ugly. Otherwise they'd be famous, wouldn't they?! Never thought of that. And of course being ugly and wearing a short skirt makes you a slut, whereas being gorgeous and wearing a short skirt means you are classy.
Got it. I am guessing you have seen the OP in real life and know that she is neither famous nor good looking, and that's why you said she could dress like a slut if she wanted. Makes perfect sense now - thanks for clearing that up.
[PS. It must be pretty glamorous in East Anglia though, 'cos I see plenty of attractive women over 40 all the time. Weird! Must be something in the water]