One day your baby could come home with a big heart tattoo with the word Mom in the middle. But until that day arrives, keep him looking rocker-chic in these onesies, which feature images of guitars and tattoos. These hard-core onesies might look tough, but washing them is a pleasant surprise: They can go in the washer and dryer without any special treatment, which is more than you can say for Mick Jagger's leather pants. 100% cotton