The 71-year-old singer invited Egerton — who plays John in the upcoming biopic "Rocketman" — to join him onstage at the annual Elton John AIDS Foundation Academy Awards Viewing Party, where the duo performed a moving rendition of John's 1972 hit "Tiny Dancer."
Egerton handled the song's vocals while Sir Elton accompanied him on piano, joining the 29-year-old star on the song's rousing chorus.
The surprise performance comes three months ahead of the release of "Rocketman," which tells "the uncensored human story of Elton John’s breakthrough years."
The movie's first trailer was released just days ago. Fans can see for themselves how well Egerton nailed the young John's accent, mannerisms and look — including all of John's wildly flamboyant 1970s and '80s stage costumes.
The trailer just may be our first glimpse of a future Academy Award winner. After all, Rami Malek picked up this year's best actor award for portraying late Queen frontman Freddie Mercury in "Bohemian Rhapsody."
Who knows? We may be seeing Egerton accept a best actor Oscar a year from now!
"Rocketman" hits theaters May 31.