"That Girl Lay Lay" stars, from left, Thomas Hobson, Peyton Perrine III, Gabrielle Nevaeh Green, Alaya High, Tiffany Daniels and Elijah Cooper. (Christopher Polk / Variety via Getty Images) "That Girl ...

That Girl Lay Lay follows Lay Lay, the perfect hype girl and best friend that anyone could ever want from their personal affirmation app. Struggling to make her mark at school and needing a best ...

"That Girl Lay Lay," the Nickelodeon buddy comedy series, will show its final episodes Wednesday, less than two years after the death of creator David A. Arnold. Arnold's wife, Julie Harkness Arnold, ...