India, April 28 -- Gigi Hadid picked New York City's L'Avenue at Saks as the backdrop to officially ring in her 30th birthday over the weekend, though she actually turned the year, earlier in the week on April 23. Seeing as it was a supermodel's big 3-0 bash, the star-studded guest list, made up of the likes of sister and fellow-supermodel Bella Hadid, mother Yolanda Hadid and actor Anne Hathaway to name a few, too, were dressed to impress the sartorial Gods.

Gigi, who is mind you, very very big on birthdays, channeled a slick but sophisticated rocker chic from the Hamptons vibe. The drip was undeniable. The cream jersey Schiaparelli paired with black leather pants and pointed sling back pumps was accessorised with a latte-hued Jimmy Cho...