Trying to a show called Gyarusa?
 

I heard of a show in Japan called Gyarusa. I'm not sure if it is still on air because I can't find out much about it. I don't know enough Japanese to find it on the Japanese sites. Does anyone know if I can watch the episodes online somewhere?

Oh sorry the title should have been "Trying to FIND a show called Gyarusa".

I think I saw it pretty recently (or something similar) on NHK. It was about "gyaru-kei" fans around the world.

You may be talking about 「東京カワイイ★TV」, which is a variety show.

「ギャルサー」 was a drama by Nippon Television from a few years ago.
Gal Circle - Wikipedia, the free encyclopedia
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To OP:
To avoid involuntarily introducing a possible illegal site right here, I cannot give links. I suggest that you google the original title 「ギャルサー」or its English name Gal Circle.