Happy Birthday Jennifer Aniston: Matthew Perry, Courteney Cox and Lisa Kudrow wish their FRIENDS co-star

It's Jennifer Aniston's birthday and we cannot keep calm. The actress clock 51 super hot years and has an equally HAWT birthday post to celebrate her special day. Her co-stars and friends from F.R.I.E.N.D.S, Courteney Cox, Lisa Kudrow and Matthew Perry took to their social handles to wish her.