I did not expect to like Bart's suit from the photos I saw. I think it works though shiny as it it is. Nora has full purple lightning now which makes me wonder if they are twins and they split their parents lightning. Barry's prior speedforce rambling about more diapers points to the twin thing.
Poor Barry. He look shocked, happy, and a bit scared all at once. He ordered one kid and gets two who are speedsters. Him and Iris are in for fun times especially with Bart who may as well brought a sign saying he is a handful.