The young defender, still only 21, was promoted from the Under-21s following Rio Ferdinand's withdrawal.
He's now with the squad for World Cup qualifiers against San Marino tonight (Friday, 8pm) and Montenegro on Tuesday. Montenegro currently top Group H.
It's been quite a season already for Steven, who has made 26 appearances including 24 starts, 15 in the Premier League. He's also weighed in with his first two goals for us.
That form has already earned a call-up to the senior squad and a first cap - and he was on target in a friendly against Sweden in November.
"This is a massive opportunity and a massive moment for me," said Steven.
"There are so many good centre-halves in England so to get called up into the senior side like this is brilliant and a great chance to hopefully learn and progress.
"Naturally it is a break that I must ensure I take full advantage of so I’m working hard in training and hoping for some game time.
"I know I’m young and I’m still learning but I am determined not to rest on my one cap so every call-up, every training camp takes me closer to that dream."
Steven was initially one of 10 players selected for England duty, five in the senior squad and five in the Under-21s.
Unfortunately, injury ruled out Aaron Lennon and Michael Dawson, but Steven joins Scott Parker, Jermain Defoe and Kyle Walker in the seniors while Tom Carroll, Danny Rose, Adam Smith and Andros Townsend remain in the Under-21s.
"It’s a big help having all the other Spurs lads here," added Steven. "We’re in with the Under-21s too (at St George's Park) and for eight of us to be here really makes me feel so much at home. We’re a tight group too and we try to support each other as much as we can."