I'm not as old as you.
Fact.
Just because Mrs Beaker doesn't let you wear jeans, it doesn't mean you can project your Dunn & Co. attire onto the rest of us.
Fact.
I've looked in the mirror and I look pretty damned good in jeans, especially in Levi 541 athletic fit. However, as is unusual for those in my age bracket, my shoulders are a lot wider than my waist, which would explain a lot.
Fact.
Now you run along and let us adults dress how we choose and not how Mrs B makes you dress. And level up your window sills why you're at it.