Robert Downey Jr has written a moving tribute to his mother on his Facebook page following the news of her death on Monday last week, writing, &quot;If anyone out there has a mother, and she's not perfect, please call her and say you love her anyway&quot;.
He goes onto chronicle her career as an actress, her battles with alcohol addiction and how she ultimately inspired him to become sober after his own struggles.

Robert Downey Jr pens touching tribute to late mother: "She was my role model"