Anna Cardwell, the sister of reality TV star Honey Boo Boo and co-star of "Here Comes Honey Boo Boo," has passed away at the age of 29. Cardwell had been battling adrenal cancer since her diagnosis in January 2023. In an Instagram post, Honey Boo Boo (Alana Thompson) shared the news, expressing that Anna was in pain the previous night but is now at peace.