How old are the band members of JLS?

The members of the band JLS vary in age. Aston Merrygold was born in 1988 and is 34 years old, Marvin Humes was born in 1985 and is 37 years old, Oritsé Williams was born in 1986 and is 36 years old, and JB Gill was born in 1986 and is also 36 years old.