So I re-made my genderbend headcanons for fem!Luffy
Because I don't like genderbends that are just the character with boobs/without boobs, I wanted to play with the physical design a little bit. Some of the changes had actual reasons behind them, but it was generally what i thought looked best.
-still a red shirt except instead of functioning buttons, she just has the buttons that go up and down the sides, and don't really do anything.
-As for the skirt and hair, I imagined that GB!Garp would want her grandchildren to grow up to be 1. marines, and 2. respectable women . Hence when they were younger GB!Ace and GB!Luffy had to wear skirts and occasionally dresses (only when GB!Garp came to visit)- GB!Ace didn't like it mostly for the fact that it was Garp telling her to do it, but GB!Luffy really didn't care. Because she didn't think about flashing people she continued to wear them even as she started forming her own crew. Despite GB!Nami's attempts to get her to wear pants or something instead of the skirt, GB!Luffy is pretty stubborn about it, and declares that anything else would be too uncomfortable.
-GB!Luffy also has long hair because Garp thought long hair=respectable woman, but because this is Garp, she never actually did anything beyond telling Luffy to grow out her hair, and as a result, Luffy doesn't really bother to cut it. In the beginning she didn't cut it because she was afraid of Garp's wrath. Now she's just used to it being a tangled mess. Occasionally G!Nami or Sanji will decide that they just can't take it anymore and comb it out for her.
-Basically the same stuff as before. Just a slightly longer skirt and a top that I realized ended up looking a lot like the outfit that hancock wore when she had agreed to take Luffy to Impel Down.
-even longer hair (partly because of reasons mentioned above and because I thought it looked cute uwu)
-Pretty much the same. She'd still be careless, selfish, stubborn, and everything else that described regular Luffy.