Once again, Quasarman reaffirms his mastery of the girl/girl esthetic with this fourth installment of his quim blowout series, Girlvana, whose previous edition took home the prize at last January's 25th Anniversary AVN Adult Movie Awards for Best All-Girl Release.

As with Girlvana 1-3, this 20-girl jamboree of 'gina is divided into two groups, each on its own separate disc. And while the juxtaposed caucuses this time around probably aren't the first that would jump to most people's minds, they are clever: private school girls vs. reform school girls.

In the first category, most spank-riffic honors have to go to the closing fourway between Tori Black, Aubrey Addams, Karlie Montana and Crissy Moon ... though fans of MILF/young girl match-ups will surely be pleased aplenty with porn legend Amber Lynn's mauling of Jenny Hendrix.

It's a pair of industry vets, however, who steal the entire show: serendipitously coupled namesakes Ann Marie Rios and Lisa Ann. Contained in the reform school set (disc two), their scene has a similar theme to the Lynn/Hendrix one, in that it's a teacher/student scenario. But both women in this case are downright animalistic, and to call their desktop romp "explosive" is no overstatement.

A number of other top-draw names appear here, including Sasha Grey, Joanna Angel and Roxy DeVille. But all told, the entire production is simply balls-out, unflaggingly blazing from stem to stern. Could this be the most aptly named porn series ever? Well, if nothing else, it certainly can't be accused of peddling anything it doesn't deliver.

Retailing: Remind g/g fans of volume three's AVN win this year.