Source: Albert Urso / Getty Solange Knowles' 19-year-old son, Daniel "Julez" Smith Jr., made his runway debut at the Luar fashion show on Feb. 13. The burgeoning model's famous auntie and glam mother, Beyoncé and Tina Knowles, sat front row to show support for his big career milestone. On Tuesday, Julez strutted down the catwalk in an all-leather ensemble adorned with fur trimming and multiple buttons during Luar's New York Fashion Week runway show. The 19-year-old fashionisto wore the luxury brand's Ana bag and straight-back cornrows along with the fun outfit ...