Out of the quintuplets Olivia and Ava are actually identical twins.
The Busby Family lives in League City, TX
At one point during the pregnancy the Busbys thought one of the quints was male. They later learned they were having all female babies.
Hazel has an eye condition called nystagmus. It is an involuntary fluttering of the eyes. It is believed to affect around 1 in 1,000 individuals.