Supergirl is older than Superman. Before Krypton went bye-bye, Kara was a girl in her mid-teens who babysat the infant Kal-El frequently. If she hadn't been placed into suspended animation for her journey to Earth and since Superman appears to be around 25 now, Kara would physically be around 40 years old. This (albeit minor) issue has, as far as I have read and am able to recall, only been addressed only once and briefly when the two met up in the early issues of the current Supergirl series.
Once the dust settles and Kara accepts that Kal-El is who he says he is and his relationship to her, I'm wondering if she'll continue to be treated as Little Miss Junior Superman...?
What are your thoughts?