Britney is the sweetest, she always supports her peers.
She likes Katy from the beginning actually, it's nothing new, I remember an interview during the Circus era back in 2008 where she said she had bought Katy's first album One Of The Boys when she came back in her hometown in Kentwood because she liked "I Kissed A Girl" and /or "Hot N Cold" (don't know exactly but that's pretty much the story)
and /or "Hot N Cold" (don't know exactly but that's pretty much the story) 
