I have to admit that I kind of love that they don't address Katee's tattoos in canon except to hide/ cover the cross tattoo, but that Kara gets another when she marries Sam. Provides lots of room for speculation.

Also, in these pics, we really get to see the maturation of Katee as Kara; compared to how she looked in the mini, she looks so much more settled into herself. Not as lanky and a lot wiser.