Anyone else dance to "Dirrty" in the mirror when they were in the awkward preteen stage? No? Forget I said anything! Christina Aguilera (born Dec. 18) will forever be absolutely iconic, from her funky braided/low-rise jeans days to her bombshell Marilyn Monroe "Hurt" days (now that I'm getting inspired by all this Sagittarian honesty stuff, I might have sang this in the mirror once upon a time – like every week). Highly recommend an Aguilera throwback binge!