I don't know what Invisalign is?!
As much as 'invisible alignment-(device)'. Katy seems to be wearing something again attempting to align her lower row of teeth. Did you see the dozens of KatyCat replies telling her to - just forget it? Hahaha. I kept faving and retweeting those
However, if Katy did call me, telling me to go and see her while she wears the Invisalign - oh yes, I'm sure I'd be so put off by that, I'd have to think about it first...LMAO!