Fairly Oddparents, The Easter Egg - Princess from the Powerpuff Girls

I am not sure at the exact time, but this egg can be seen in the "Fairly Oddbaby" 1 hour special at the part where evil Cosmo and the pixie leader are zapping the baby for its magic. When the machine explodes, five or so fairies fly and shoot through the wall. If you look carefully, the silhouette at the top is Princess, one of the antagonists in the Powerpuff Girls.