At the core I would say that no, there isn't. I highly doubt you would see a gyaru in Japan also cosplaying. The two just don't go hand in hand! Most gyaru wouldn't express a interest in this hobby; the only gyaru I have seen ever expressing an interest are gaijin gyaru!
Whilst flicking through this month's Ageha, I was surprised to see some brief cosplay tutorials for the Vocaloids: Miku Hatsune, Luka Megurine and Rin Kagamine.
For those if you who haven't heard of Vocaloid, it's a music program. It contains pre-recorded voices from different people (singer Gackt has even loaned his voice towards one named Gakupo) and you can use them to sing different songs. The characters are the faces of different voices and it has actually spiralled into out of control popularity. There's a weekly ranking, merchendise and the Vocaloids even hold concerts!
The tutorials are brief. VERY brief.
I'm not sure how to react to these to be honest!
I don't think the make-up they did for Rin works well; she's supposed to be a fairly young girl and I can't imagine a young girl wearing that much eye make-up! It just looks very heavy. In addition she's also wearing the wrong contact lenses...
My favourite out of the three is the Luka as her make-up definitely doesn't look quite as heavy as the other two girls! She looks almost naturally flawless, and I'd definitely love to see that sort of make-up used in more gyaru co-ordinates!
Which is your favourite? Is there room for cosplay in gyaru?