The fourth season of iCarly began airing on Nickelodeon July 30, 2010 and ended on June 11, 2011. The season features Carly Shay, Sam Puckett and Freddie Benson as their own Web Show iCarly is becoming more popular worldwide. Jerry Trainor co-stars as Carly's big brother Spencer. Noah Munck joins the main cast this season as Gibby Gibson. The specials in this season are: iGot a Hot Room, iSam's Mom, iDo, iStart A Fan War, and iOMG.
Spencer tries to give Carly the best birthday ever. He lets Gibby's grandfather cut his hair and Spencer makes Carly a gummy bear lamp. Everything thing goes bad after a gummy bear lamp Spencer made catches Carly's room on fire. Spencer then finds out that his relative's watch that Carly had was destroyed and was worth $82,000. Spencer convinces Carly to get a part-time job at the Groovy Smoothie while he, Freddie, Sam, and a working crew put together an amazing new room to Carly's surprise.
Sam moves in with Carly after fighting with her mother; Freddie is stalked by a dangerous criminal.
After Carly recruits Spencer to help her prank Sam and Freddie, Spencer can not stop pulling pranks.
When the gang goes into business selling penny T-shirts, Sam recruits children in fourth grade to help make them.
An iCarly fan proposes to his girlfriend live on the web show; Carly must come to the rescue when a bride gets cold feet.
Carly, Sam, Freddie, and Spencer finally get to attend a Webicon. However when they arrive, Spencer meets an old nemesis, and the web-hostesses find themselves caught in a heated rumor over which of the two girls are dating Freddie.
Carly and Sam hire an attractive male intern who winds up being bad at his job, so Freddie tries to convince them to fire the new guy
Nevel's image is ruined after a video of him berating a child goes viral, so he asks Carly and the gang for help in restoring his reputation.
Carly and her pals work on completing assignments during a "lock-in" at their school. Carly and Freddie think that Sam has a new crush and assume the lucky guy is their intern, Brad. Freddie then uses his Mood Reader app, which confirms that Sam is in love but doesn't specify with whom.
Carly is dating a boy named Steven who divides his time between his divorced parents who live in Seattle and Los Angeles. Meanwhile, Tori is also spending time with her new boyfriend who, unbeknownst to her, is the very same boy Carly is seeing!