The best part about modernizing a bathroom is that the process doesn’t have to entail a complicated design process. For example, a worn-down vanity can easily be transformed with a fresh coat of paint, while a shower stall that looks straight out of the 1960s (not in a good way) might just need some new tiling. And so even if “DIY” might not be your favorite initials, a little elbow grease can be an easy route to getting your bathroom looking magnificent instead of meh. So we’re sharing the hottest DIY bathroom looks from—you guessed it—the oh, so chic design world of Instagram. Whether you just bought a fixer-upper or…