I've Ordered... Now What? (Answered. Thank you very much!)

I recently ordered from Baby for the very first time. I know from looking through the memories and using the EGL search that you need to pay the invoice withing 12-24 hours or else they cancel your order. However, It's been 6 ours and I haven't gotten an invoice or an email about the invoice and it's worrying me; I was able to snag the last JSK in the colorway I want and it's from the 60% sale too.

So my question is; how long does it take for Baby to invoice you for your item?