"You don't think you will get two hat-tricks in two games.quarter-final and semi-final is an unbelievable feeling", Brewster told reporters.
Here are five things Squawka learned from England's win.
They are the second England team to reach a World Cup final this summer after the u20's won their tournament.
Brazil equalised 11 minutes later through Wesley, but England regained the lead before half-time when Brewster was on hand to knock in a low cross from Fulham full-back Steven Sessegnon.
The Liverpool striker's clinical display in Kolkata booked his side's first ever place in the final of the tournament at the expense of the three-time winners.
Stung by the goal, Brazil went all out and twice came close to scoring.
Imagine if Pep Guardiola was a footballing equivalent of Dexter from the cult kids show Dexter's Laboratory and was able to genetically engineer his ideal footballer, you'd imagine that his creation would look a lot like Phil Foden. "And obviously they are going to go and play the ultimate game - the final". He's reminiscent of a young Jack Wilshere. "It was for Chelsea and I think it was U-12s, against Tottenham". If he doesn't make the grade at Manchester City, they may as well just shut down the academy as nobody else stands a chance.
But Brewster made all the running.
In Sancho's absence, Chelsea youngster Callum Hudson-Odoi - incidentally the only 16-year-old in the squad - has been given a chance to show what he can do and he was extremely impressive against Brazil thanks to his direct running and the quality of his final ball.
Arsenal and Liverpool have two of the best young strikers in England.
The South Americans were, though, level on 21 minutes when Wesley got ahead of England captain Joel Latibeaudiere to lash the ball past Anderson after the keeper had saved from Vasco da Gama forward Paulinho.
England played Brazil after beating the United States of America on Saturday when Brewster was also a key player in a 4-1 win.
Saturday's finale in Kolkata will be a re-run of the UEFA European Under-17 Championship in May, which saw Spain beat England on penalties.