The Czech model says she and British actor Jamie Belman - who got engaged in January after eight months of dating - are still figuring out the specifics of their big day, butthey want it be "lots of fun". She said: "Part of it will be more formal and part of it will be just lots of fun and just craziness. We want a little bit of craziness." The 31-year-old beauty - who has dated singer James Blunt and was engaged once before to British photographer Simon Atlee, who was tragically killed in the Indian Ocean tsunami in 2004 - said they might say their vows on her fiance`s homeland but are still undecided. She told UsMagazine.com: "It will probably be in England, but we`re still figuring out which specific place will be the best. We haven`t picked just yet." However, the catwalk beauty has decided what she will wear, revealing she has opted for a "beautiful and elegant" Marchesa gown. Although Petra and Jamie haven`t been together for very long, she was sure he was `The One` the first time she met him. She gushed: "Both of us knew right away. We fell in love really, really fast. He is a real man. There are no layers. He`s not like an onion. He is who is. He`s incredibly loving, nurturing and caring and I love that."