Liz Gillies needed Ariana Grande's "blessing" before she ... including Daniella Monet and Avan Jogia, but she had no idea they were coming to see her and they ended up "giggling like children ...

In the photo Justice was joined by former cast mates Ariana Grande ... In a second photo, actors Matt Bennett and Avan Jogia – who was wearing a dinosaur onesie – joined the old Nick crew.

Ariana Grande wrote that she "couldn't have ... Other cast members also shared in the nostalgia and celebration, including Avan Jogia, who wrote “Love yah,” and Daniella Monet, who played ...