OK lol, so I'll think about some more that are Britney related. Maybe "Born To Make This Record" , "Hit Me Records", "Brit Beat" and I'll be back.
And if she does a label just for herself, without signing new artists in.. then maybe "Lonely Records" and ehm that's not a joke attempt.
BTW, in your idea - Did you mean she'll open the label just for herself or to sign other artists in as well? And... she could leave Jive Records after the 5th album?