A mum-of-eight reveals how just spends just $12k-a-year on her food shop - and still cooks dinner for her adult children.

Heather Bell, 53, and her husband, Luke, 51, had tried for a baby for eight years when they adopted their eldest son, David, 24.

The couple decided to help others and gave fostering a go - going on to then adopt Robert, 23, Joshua, 22, Hailey, 22, Brendon, 21, Izzy, 18 and Noah, 17.

They were also lucky enough to naturally conceive, Gideon, 20.