Are the Pussycat Dolls Related to the Fanta Girls?

We saw one of those annoying "Wanna Fanta, Dontcha Wanna?" Fanta commercials today and thought about the super talented Pussycat Dolls ("Dontcha Wish Your Girlfriend was Hot Like Me?"). Dontcha think they have the same writer and probably the same manager, dontcha? We do! They might even be the related...LOL