Season 3 of Shrinking wrapped earlier on the 2026 TV schedule, and now, the cast and crew are hard at work on Season 4. Apple TV renewed the comedy in January, and the upcoming season is confirmed to include a new story with the same cast and some fresh faces as well. Karen Gillan is among the new cast members, and she shared a seven-word message for fans from the set.
It was announced in May that Gillan would be joining the cast of Shrinking in a recurring role. At the time, her character was being kept under wraps, and it’s still unclear who she is playing. There have been some guesses, such as a therapist, a patient, or yet another love interest for Jason Segel’s Jimmy. However, nothing is confirmed. Speaking of Segel, though, it seems that the Doctor Who actress shares scenes with him, as she posted an image and sweet message from the set on her Instagram Stories: