The 25-year-old pop star-turned-boutique owner is expecting her first child with boyfriend Sam Cooper, 32, and the baby boy is due next year.
Lily has considered giving the little one a suitably showbiz name, although she admits builder Sam has more conservative taste to her and might get mocked by his colleagues if his son has an unusual name.
“I’ve got a really stupid list of names, but I’m not going to show you,” she chuckled in an interview with Stylist magazine.
“But, no, we probably won’t. I think Sam is way too straight and traditional for that sort of thing. He’d get the p**s taken out of him on the building site.”
Lily is excited about motherhood, although she admits she does worry about the costs of raising a child, despite making plenty of money throughout her pop career. The star is adamant her and Sam’s son will go to a fee-paying private school rather than a free state-school, which means there will be additional costs to his upbringing.
“Tax bills scare me,” she laughed. “I know I’m lucky to be in a position to do this, where I’m comfortable in the knowledge that I’ve got a nice house and a little pot of money for school fees. Because I do want to send my son to a private school...”