Sister, Sister - Invisible Nail Polish
This slip up occurs in the season 2 episode Two for the Road. After Tia and Tamera both receive driving lessons from their parents, when they are sitting at Rocket Burger, Tamera remarks that she likes Tia's nail polish. But if you pay attention, Tia isn't even wearing any nail polish. A small error, but it could have been prevented.
Episode Two for the Road
on 08-29-2011 and