The `Behind Closed Doors` hitmaker begins his UK tour next week and revealed he has created a special sequence involving five-year-old Junior, his eldest child with ex-wife Katie Price. He said: "I`m excited because Junior is going to be involved in my forthcoming tour, and we`re working on a little surprise. I don’t want to give it away, but if you`re coming to one of my gigs, you are in for a real treat." While Junior is preparing to make his stage debut, Peter`s daughter, three-year-old Princess Tiaamii, has been amusing herself by preparing special culinary treats for her father. Peter explained: "Princess has taken to mixing water with flour to make `pizza dough` which, as you can imagine, is a bit messy. She loves it, though. I haven’t got the heart to tell her that I think there`s a bit more to the pizza-making process than that!" Peter has previously admitted he expects Junior to be a bigger star than he is. Asked if his children are fans of his music, Peter said recently: "Junior loves it. He`s like a mini Michael Jackson, doing all of the moves. He puts me to shame. He thinks of songs in term of the whole package and will do a little routine to the song. I`m telling you, he`s going to be a star. "He`s got a plan! I`m always like, `You`re going to be playing the O2 before I am.` "