The DJ was spotted leaving a Hollywood nightclub with matted, bleached blonde hair that exposed the extensions embedded at the top of her head.
We know Ronson is going for the low-maintenance look, but this is taking things a little too far - her hair needs some urgent attention! Let's just hope that she made the effort to hide the roots earlier in the week when she attended Nicole Richie's wedding.
What do you think of Sam's hair? Leave a comment below.