Girls Aloud Go Go St. Trinians

Girls Aloud (something like a reality-show formed Go Go tribute act, my non-UK dwelling chums) have been snapped on the set of St. Trinian's. I'm assuming they're making a cameo, presumably as themselves. If they're supposed to be schoolgirls and this whole thing is cast with a Mind Your English-style disrespect for playing ages, let alone ages... sheesh. It'll be even more awkward than I expected.

Thanks to Butcher's Doggy for the pics - which you can click upon to embiggen.