First, Juliet from Wizards of Waverley Place got in her own show in Good Luck, Charlie under the name of Teddy, and then Bailey from Suite Life on Deck got her own show in Jessie under the same name. It’s also a coincidence for the fact that both the first and second Disney sitcoms I mentioned that star Bridgit Mendler and Debby Ryan got crossovers with each other and in separate pairs (that is, Wizards of Waverley Place with Suite Life on Deck, as well as Hannah Montana, and then Good Luck, Charlie with Jessie), kind of like how for Nickelodeon, iCarly got a crossover with Victorious.
Tawni is jealous of Sonny because the Randoms loves Sonny more than Tawni. Amber is jealous of Sofia because she’s new to the royal family and everyone loves Sofia more than Amber