The two boys were having a lot of fun dancing alongside their mum.
All kids go through weird phases, and celebrity children are certainly not exempt.
Madonna celebrates her youngest daughters' ninth birthday shortly after her own 63rd birthday.
Football player Tom Brady's son Jack is another year older, and his blended family has celebrated on Instagram.
Miranda Kerr calls Orlando Bloom an 'annoying younger brother' as she discusses co-parenting with the actor
'When Orlando started dating Katy, I remember he invited me over one time and she was there, and we just immediately got along'.
Aguilera boasted about her inspiring and bright young girl.
The reality star is making the most of cuddles with the youngest of her four kids.
Jason Momoa reveals one thing he doesn't want his kids to know about his past: 'Never happened mate!'
Although there must be many great things about being a celebrity parent, including being able to share your art with your children, it isn't always appropriate.
'I got a bit experimental with pasta, I tried to do a creamy boscialola sauce with bacon and eggs, and it was pretty much scrambled eggs in pasta'
'We found out yesterday that it's her doll's birthday, and now we have to order a cake. She's taking it very seriously.'
'I think like many women, I have felt the pressure of being the backbone of my family.'