A statement from the Wright family this morning revealed that Nanny Pat - real name Patricia Brooker - had passed away following a short illness.
Devastated granddaughter Jessica has now said on Twitter: "Heartbroken does not even come close to how my family & I are feeling. Thank you so much for your support my Nan was so loved, an angel."
Jess and Nanny Pat were very close: on the last series of TOWIE viewers saw Jess singing a song for Nanny Pat's 80th birthday and presenting her with a framed photo of late husband Charlie.
Her brother Mark has also paid tribute, saying: "My heart is broken but so overwhelmed by your support. To know good ole Nanny was loved by so many is the best feeling in the world Thank you."
This morning's statement from the family read: "Sadly our amazing, courageous and beautiful Nanny Pat passed away this morning after a short illness. We are overwhelmed by sadness, and the whole family ask for privacy at this horrible time."
Nanny Pat had been a TOWIE favourite since series one and provided many memorable moments over the years such as her rapping, her swimming lesson and her pearls of wisdom to the young cast.
Several TOWIE stars of past and present have paid tribute via Twitter, as well as viewers and fans who are devastated by the news of her death.