Demi Lovato reveals her mom thinks Simon Cowell is 'even better looking in person'

It seems as if new judges Demi Lovato and Britney Spears are enjoying their time with X Factor creator Simon Cowell and fellow judge L.A. Reid.

Although there were reports that Spears walked off stage on their first day of filming due to being offended by one of the singing hopefuls taking a crack at one of her songs, she quickly denied the report on Twitter.

"Britneywalksoff??? LOL was just taking a little break people," she wrote at the time. "I am having the BEST time!!!"

Now it seems as if Lovato, 19, and Cowell are developing a playful relationship.

Irish Central reports that the Give Your Heart a Break singer called Cowell grandpa after he tried to set her up on a date with one of the hopeful contestants.

Her mother, however, believes that Cowell is the one with the good looks.

On X Factors official Twitter page, they wrote "@TheXFactorUSA: Simon told us that Demi thinks he's even better looking in person. @ddlovato is this true?

But Lovato replied, "No Simon-that was my mom!

After her first day, she seemed to be enjoying herself, writing OMG!!! This is so much fun! #XfactorUSA ... Such an amazing day ... can't wait to do it again!!! #XfactorUSA