The 'Missing You' group told the Daily Star that it would have to be a tasteful shoot for them to consider it.
"We always say, 'Never say never,'" said Rochelle Wiseman, who yesterday blasted comments calling her fat.
Una Healy added: "I would consider it if there was a way of sneakily covering your bits."
The 28-year-old was recently left "upset" after being photographed topless while on holiday with boyfriend Ben Foden.
However Frankie Sandford was not as open to the idea as her bandmates, saying: "Oh my God, no! I'd never do it. Definitely not nude. Never."
She added: "I do think it can look nice if it's done tastefully."
The group release their new single and mini-album Headlines next month.