The Bad Boys singer has remained close to the Girls Aloud star who was her mentor on UK TV talent show The X Factor, which she won last year and believes they will always share a special bond.
She said: I definitely think we will always be friends. When she has her kids, I’m going to be godmother I guarantee you. Or an auntie.
Alexandra who is currently single is also hoping her future children will one day play with Cheryl’s brood.
Asked where she wants to be in five years time, Alexandra replied: Probably on my third album and they’ll have all gone to number one. And, maybe, I’ll be thinking about kids. Just thinking!
Cheryl - who is married to soccer star Ashley Cole - recently revealed she is keen to become a mother soon.
She said: "Having a baby is important to me because I am from a big family. I have friends who have put it off and I don't want to do that. I feel like all this that I do is just make-believe and at the end of the make-believe I will always have my family. So if I am blessed, I would love a big family."