Warne, who will captain the Rest of the World side that Pietersen is part of, said that he fully expects the swashbuckling star to put on a show once again despite now not being part of the England squad.
"KP is an absolute match winner," Warne told Sky Sports News. "He is a superstar and a wonderful player. He is fantastic to watch, I'm sure he will turn it on on Saturday and smash it all over the park.
"He has played well over the years at Lord's in his time with England and hopefully he can do that on Saturday."
Pietersen has played 104 Test matches in his career.