to prompt line, "You are way hotter in person."
off the top of my head:
I'm also way cooler.
Too bad it's not a beauty pageant I'm competing in.
I changed my hair.
(please feel free to contribute. As Kate Eicher tweeted, there are a million witty possibilities)
But I am of the opinion that the only effective rejoinder (politically, not humorously) would have been some variation of "I'm way smarter in person, too." It's what I would have said.