A while back, I was looking at some Japanese porn sites and noticed in one scene where the actress was described as 'gyaru.' She had a nice tan and modest breast implants. I liked her and thought she looked different from the usual women you see in Japanese porn, so I did a google search for the term.
'Gyaru' is a transliteration of the English word 'gal', and signifies an ultra-girly, heavy tan, heavy makeup style of fashion and appearance. It seems to be partially inspired by beach/valley girl looks of the USA. I like it! It can be quite sexy. It isn't the same as the 'bimbo' look that a lot of us on this forum go for, but it's sort of a cousin. Now if they started getting big implants and lips, that would really send it into orbit.
In the more extreme cases, though, it starts to get away from ultra-feminine and more resemble Mardi Gras/Carnival costumes in my opinion.
I've attached a few of the pictures that I like as well as a few that I don't care for, but show how extreme the look can get.