The Sister Sisters — who are enjoying a comeback on their Bravo reality show Tia and Tamera — turn 34 today, and, unlike Armie Hammer, they are the real thing. One good way to tell them apart is that Tia is a little taller and Tamara is the self-proclaimed "reason Seth MacFarlane likes black girls now." K.

Bye! Drink a lot of water and stay in air conditioning.