Amanda Bynes is gearing up for her next conservatorship hearing, and her former costars are apparently rallying behind her to show their support. As the troubled actress, 35, prepares for her upcoming hearing on Tuesday, March 22, after filing to end her conservatorship earlier this year, her former All That castmate Leon Frierson reportedly insisted he will be present at the courthouse to offer some moral support. In addition, Christy Knowings — who also starred on the comedy series — is backing her pal, even though she can’t be there in person. “If it were me I would want people to support m…
