08/17/2014 AT 01:00 PM EDT
Cue the blonde jokes.
showed off a new platinum do this weekend, captioning her first post-makeover Instagram
, "change is good."
creator's hairstyle is a complete 180 from her usual dark, curly cut. Maybe she was inspired by flaxen-haired BFF Taylor Swift
Either way, it seems this beauty change is no prank. Though stars like Lauren Conrad
have faked out fans by wearing wigs or Photoshopping dye jobs, Dunham's tresses appear to be the real deal.
The 28-year-old dumped water over her head as part of the ALS #IceBucketChallenge
– and her blond bob stayed perfectly in place.