Sofia Richie and Hailey Baldwin ruled Dolce & Gabbana's Milan show

Dolce & Gabbana's SS17 show at Milan Fashion Week was a who's who of young celebrity faces.

The show played host to at least two Instagram-famous, Justin Bieber-associated models: Hailey Baldwin, who walked in the show, and Sofia Richie, who sat in the front row. (Which begs the question: where was Bronte Blampied?)

Hailey, 19, looked stunning in classic D&G glamour, in a LBD with a dramatic flower in her hair.

While Sophia, 18, hung out with YouTube star Cameron Dallas, wearing a white blazer over a black bra.

To Dallas' right? That's Sylvester Stallone's 18-year-old daughter Sistine, who just signed a modeling contract with IMG.

She also Instagrammed a special moment between her and the namesake designer Domenico Dolce at the designers' Boutique Opening Event, where he presented her with a special gift.

Baldwin capped off her special night with a lacy look of her own, mirroring Richie's black dress with her own bridal-looking white sheath.

Yep, Bieber missed out on quite a party.