I’ll always love her as a blonde but it makes her look at least five years older at this point. Brunette suits her perfectly. She looks so much younger and her age at worst. It even looks presentable in candids, since she's Britney and doesn't bother styling it:
I pray that she keeps it for the next era. Her arms are slimmer, her entire body is on point, her skin looks good... the break-up has been surprisingly good for her.