Julia Roberts celebrated her late mom Betty Lou Bredemus on Instagram on her birthday. Bredemus died in 2015 at the age of 80 from lung cancer.

Betty Lou Bierbaum will celebrate her 80th Birthday with an Open House on Saturday, August 6, 2011, from 5:00-8:00 p.m. at the Crystal Ballroom, 150 Highway 30 West, Chatfield, Minnesota.