The 21-year-old singer appeared on E!'s 'Chelsea Lately' show last night (13.02.14) where she admitted that although she dated The Jonas Brothers star when the pair were teenagers she doesn't think he's the best looking sibling in the now defunct band.
When asked which member of the group was ''the cute one'', Demi told host Chelsea Handler: ''They have a new niece, and she's really, really cute.''
Referring to eldest brother Kevin's new daughter Alena Rose, the 'Heart Attack' hitmaker managed to dodge the question of whether she thought one of her ex-lover's siblings was better looking, but went on to reveal that her relationship with Joe wasn't as serious as people thought.
She added: ''We dated for like a month. Everyone made it seem like it was this big, big deal.''
Despite admitting that their relationship wasn't serious, Demi has remained close with the Jonas family and even hired her former 'Camp Rock' co-star Nick Jonas to be the musical and creative director on her 'Neon Lights' tour - which is being supported by British girl group Little Mix - and even had him join her on stage with his guitar to perform a number of duets.
Many ticket-holders couldn't get into the O2 Arena show on Tuesday night (September 19th) because they didn't bring photo ID to match their booking.
An album re-release, a new song and a documentary mark the singer's legacy this year.
The actor plays the titular hero in the forthcoming adaptation.