Jennette McCurdy Beef, 2014
On Nickelodeon's Sam & Cat, Jennette McCurdy played the Cat to Grande's Sam — a role which involved them, naturally, playing best friends. The duo broke hearts when a rift played out publicly over social media. Briefly, this involved McCurdy not showing up at the Kids' Choice Awards — where Grande won Favorite TV Actress. Later, McCurdy dropped a long subtweet about a draining friendship, and later released a web series featuring a snotty, pop-singing character called "Gloriana," which most interpreted as a dis directed at Grande.