Betty White to Guest Star on The Middle

At this rate, there may soon be no room remaining on the Betty White bandwagon.

Months after she appeared on 30 Rock, and just a day after she was confirmed as a host on the May 8 edition of Saturday Night Live, the 88-year old actress has landed a part on The Middle.

White will portray a school librarian who confronts Brick regarding his failure to return numerous overdue books. Her episode will air this spring.