Lady Gaga will show fans she has put an end to her feud with pal Sir Elton John when he joins her on a Muppets festive TV special next month (Nov13). The outspoken Rocket Man accused the singer, who is godmother to his two sons, of avoiding him and refusing to take his calls over the summer. They appeared to be back on speaking terms when she joined him and his partner David Furnish for dinner in Los Angeles last month (Sep13), and now they will put on a united front by joining forces for the Lady Gaga & The Muppets' Holiday Spectacular. The show will air in the U.S. on 28 November and will feature the two superstars performing with Jim Henson's beloved puppets. Elton last appeared on The Muppet Show in 1978, when he duetted with Miss Piggy on Don't Go Breaking My Heart, as well as playing Crocodile Rock, Bennie And The Jets, and Goodbye Yellow Brick Road.