In a professional environment, I still rarely mention my age. I think it detracts from the respect I get.

Oh hell yeah. At my last company, despite the fact that I had more relevant experience required before pursuing a certification (there was a minimum year requirement) and despite the fact that I'd said I wanted to pursue said certification, my management offered education opportunities to an older man that they were pushing for the certification, and didn't even mention them to me. I'm certain it was related to one of two things: my gender or my age. Somehow, being 23 at the time totally wiped out how much work experience I actually had to them. I was absolutely treated like a dumb young kid even though I was more experienced than half the people in the office.

Depends on the office thank god. I work in an environment where I'm always the youngest person and usually by at least 15 years. Always have since I started. My current job's a lot better about this; they take me seriously no matter what.

he demanded to see and approve my outfit

And that...that...wow.