Solange Knowles shares her teenage son with ex-husband Daniel Smith Rodin Eckenroth/Getty; Tina Knowles/Instagram Tina Knowles is celebrating her grandson Daniel "Julez" Smith Jr.'s 19th birthday!

Solange Knowles has never let being the sister of superstar ... successfully raising her son Daniel Julez Smith Jr, who goes by the name Julez. Find out all about Solange’s only child, below!