The judge got to swap from the UK to the US version of the talent show last week, standing in for head judge Simon Cowell - who was taken ill - and got on so well with new judge Britney, pals are saying they are now Best Friends Forever (BFFs).
Sinitta, a long time friend of both Louis and Simon, told Heatworld.com: ''Louis is absolutely besotted with Britney. I called him the other day and it's all he talked about. They're new BFFs, and they're in contact with each other a lot!''
When they were recently interviewed, Louis admitted: ''Britney and I are bonding.''
The 30-year-old 'Toxic' singer added: ''I have so much fun with him.''
The other judges on the US panel also took to Louis, with Demi Lovato saying: ''There is only one Simon...but Louis killed it.''
Fourth judge, L.A. Reid, who butted heads with the Irishman over one contestant, held no grudges, saying: ''I absolutely love working with Louis.I find him fascinatingly quick, thorough, and remarkably entertaining.''
Although Louis was a hit on the show, it looks like his appearance will be a one off, as Simon is set to return at the San Francisco auditions tomorrow (16.06.12).
With clips from more than 200 teen movies made in the decade after 1995's Clueless,...
The cameo-driven, "Mission: Impossible 2"-spoofing, movie-within-a-movie, pre-title sequence of "Austin Powers in Goldmember" is the...