The Nickelodeon sitcom iCarly centers on Carly Shay, who creates her own web show with her best friends Sam and Freddie. The series stars Miranda Cosgrove as Carly, Jennette McCurdy as Sam, Nathan Kress as Freddie, Jerry Trainor as Spencer and Noah Munck as Gibby.arly Shay (Miranda Cosgrove) starts as a 13-year-old girl who lives with her older brother, Spencer, in Seattle, Washington. Carly's best friends are Sam Puckett, Freddie Benson and Gibby Gibson. Carly lives in the Bushwell Plaza in apartment 8-C with her funny, often careless, artist brother Spencer Shay.