London - Connor Wickham headed Crystal Palace into the FA Cup final for the first time in 26 years as his team beat Watford 2-1 at Wembley Stadium on Sunday.
The south London side will meet Manchester United on May 21 in a repeat of the 1990 final, which United won after a replay.
United beat Everton 2-1 on Saturday in the other semi-final.
Yannick Bolasie headed Palace ahead in the 6th minute after a corner from Yohan Cabaye was flicked on at the near post by Damien Delaney.
Watford drew level in the 55th when striker Troy Deeney out-jumped Palace defender Scott Dann to head past Palace goalkeeper Wayne Hennessey.
Wickham put Palace ahead in the 61st after he easily out-jumped Watford defender Nathan Ake to meet Papa Souare's sweeping cross.