Check this out:
S/mileage in the middle row. Eggs back-up dancers for Mano Erina's Hajimete no Keiken PV in entire middle row. 2nd gen Shugo Chara eggs are first three in front row.
Pretty sure this picture was taken long before the 3 "groups" were created...pretty neat, huh?!!
If I'm not wrong this pic if from 2009 Step! concert... Shugo Chara Eggs! perform in that concert and I believe it was the introduction of S/mileage as Indy group... Erina had already released Sekai wa Summer Party....
^ Hmmm you kind of have a ton of reason there... hahahaha missed the date of the picture XD Still Shugo Chara Egg! was already formed and was about to release their first song, Minna no Tamago, and Manoeri had already released her second Indy, Lucky Aura.