The Kings of Leon frontman and his model fiance Lily Aldridge - who got engaged last year - are busy planning their nuptials, which will take place in California.
According to the New York Post newspaper, guests will include Caleb`s bandmates - brothers Jared and Nathan Followill and cousin Matthew Followill - Maroon 5 frontman Adam Levine with his girlfriend Anne Vyalitsyna, Rosie Huntington-Whiteley with her boyfriend Jason Statham and a host of Lily`s fellow Victoria`s Secret models including Chanel Iman.
Before the wedding, Caleb and Lily will rent a house in Palm Springs to enjoy the Coachella Festival, which the Kings of Leon headline on April 15.
Speaking about the break, Lily said: "I`m counting down the days. We`re gonna cook food, go watch great bands and listen to music. I`m really excited."
Caleb`s wedding news comes after it was announced Matthew is to become the first member of the band to become a father.
The guitarist`s wife Johanna Bennett is more than six months pregnant with their first child and the group are thrilled for the couple.
A source said: "Although Jo and Matt haven`t made any announcement it`s well known among her friends that they`re having a child.
"They are both absolutely thrilled and can`t wait to become a proper family. They don`t know what they`re having but don`t mind either way.
"The rest of the band are just as happy as they are and are looking forward to meeting the new arrival as he or she will be the first Kings of Leon baby."