Ariana Grande Poses as Regina George From Mean Girls in Latest "Thank U, Next" Video Teasers

"Thank U, Next" might make the Burn Book a lot more fetch in Ariana Grande's new music video. The singer released a trio of teaser pictures portraying Mean Girls' Regina George on the set of her "Thank U, Next" video Friday (Nov. 23) -- complete with long, blonde hair and a "Thank U, Next" version of the movie's…