Leaving very little to the imagination, Christina Aguilera rocked her "birthday suit" in celebration of her 44th birthday on Wednesday, Dec. 18. In her latest Instagram post, the "Come On Over ...

I've worn it with a cheeky bra to a birthday dinner ... know Indochino as a men's retailer of custom suits, but they have also launched a women's line. Indochino is known for its made-to-measure ...