Kat McPhee sings 'Over It' at her 40th birthday bash

[@robind8149]

Happy belated birthday, sweetie! You have never looked or sounded better!😉🙏❤️

[@cbotten106]

I remember when that crowd in New York started singing along with this during her radio tour. Time flies! Happy 40th Kat!

[@Khaotic_Reign]

OMG, Kat is so lovely, I hope this beauty has the greatest 40th birthday EVER!🎉🎊🥳🎂🍰🎁

[@johnjosephmercadante6664]

If I had to guess your age, I couldn't. You are still the same as I remember when you started out. So celebrate! 🎊🎂🍾...

[@dianelawrence2910]

When did she get so thin?

[@cbotten106]

About 15 years ago, post idol.