First time ever Amazon tried to charge me for a Vine order?

I saw a shirt in my RFY. Clicked it, changed the size, then went to grab it and it took me to a page about payment information and said (I wish I could remember) something like, to confirm this charge to this card, click submit or something like that. I'm like "huh? so then I backed out and didn't do anything. Then I later get an email from amazon saying order # blah blah blah has been cancelled due to failed payment authentication. But, this item shows up in my vine orders.