Embellishing the Hippeastrum* for Vogue 1020, the dress

This fabric floral, believe or not, is the centerpiece of a panel of one-way stretch jersey (?) that I bought the other day at Vogue Fabrics. Each panel has one massive flower for the entire length. There's actually a really long brown stalk and leaves that you don't see here that's on the backside of the dress version of Vogue 1020. It pained me greatly to separate the flower and the leaves and actually leave the flower off the back of my dress. One of these big beauties on a dress is enough and I just remembered the signature Sarah Jessica Parker dress from the movie version of "Sex in the City." One is enough, two is overkill, three makes for the beginning of a garden if you know the dress I'm talking about. Anyhow, I don't have a mint green thumb, so I'm not entirely confident that the flower above is a Hippeastrum, but it looks like the one on this Wiki page. Am I wrong or am I right? I was totally tempted to call this an Amaryllis, but I understand Amaryllis is often confused with Hippeastrum, and I'd like to get the correct name of the plant if it's going front and center on the garment I'm sewing. Any flower experts out there?
* I decorated the center of the flower with glitzy blue dot Hot Fix transfers also on sale at Vogue Fabrics. It was $1.29 a yard. I bought a 1/4 of a yard, plenty for my purposes!