United Kingdom, Feb. 1 -- Annie Murphy has paid tribute to her Schitt's Creek mother Catherine O'Hara.

Following Catherine's sudden death last week at the age of 71, Annie - who played Alexis Rose opposite Catherine's iconic alter-ego Moira Rose in the TV comedy - took to Instagram to remember her late co-star and friend.

She wrote: "Ha-ha-HAAAA?!?! Her laugh was a perpetual Yes, And. It challenged anyone who heard it to join in, and be as delighted as she was. It challenged anyone who heard it to join in, and be as delighted as she was. Gosh, were we ever lucky to have her."

She also shared a note about what she had learned from working with Catherine.

She wrote: "She would have never presumed to call herself a teacher (too self-depr...