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

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

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

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

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

When did she get so thin?