Shoulders, hips, hands, facial features...basically the stuff we can't change. But her presentation was really good. Voice was perfect, mannerisms completely female, good eye contact. She was very comfortable as herself.
The overall package was good enough that I doubt she gets clocked very often. As Grace said recently, most people have the mantra "I'm cis, you're cis, everyone is cis." So unless something major is out of place, the vast majority just assume everything is normal. So this girl would easily blend in now. And given a bit more time on HRT, even we'd have a hard time clocking her.