There’s a whole load of ads around at the moment which tap into the theme of female friendship. Let’s call it the Sex and the City effect. That TV series and movie franchise was an exploration of the close bonds between a group of girlfriends, with rather a large serving of consumerism on the side. A celebration of friendship and shopping in equal measure, one could say. And given that young, single, professional women have a lot of disposable income (relative to other groups anyway) it’s ripe territory for advertisers.