Are u growing in coco? I would take a look at my diary, the last photos were for week 4 and they are far bushier/ taller. I do hope they really start too bush out and get big!
@clovergarden, Ah ok that's gotta be it, is thier a reason for such a low wattage light or is this just how yoire setup? Youd be better off getting a better light for the start - veg them girls out hard and then let them stretch - bigger plants = bigger yields. Happy growing