The 'Insta-famous' sons and daughters of New York's elite just made their fashion debut - here's what happened

In addition to being an aspiring fashion designer, Andrew Warren is something of an Instagram celebrity. He has more than 51,000 followers and is the ringleader of a group whose adventures are often chronicled on the "Rich Kids of Instagram" blog, packed with over-the-top photos of luxury bags, massive bottles of Dom Perignon, and flights on private jets.

But this group of friends are ready to do some big things of their own. Warren debuted his first-ever clothing collection from his new brand "Just Drew" during a Style Fashion Week runway show Sunday.

The line, Warren says, was inspired by his tight-knit group of socialite friends - which includes Robert F. Kennedy, Jr.'s daughter Kyra, Donald Trump's daughter Tiffany, the great-great-granddaughter of French painter Henri Matisse, Estée Lauder's granddaughter Dani, and actress Abigail Breslin - and was properly coined the "It Girl" collection. The women who inspired the clothes also got the chance to walk the runway.

Held at Gotham Hall in New York City, the venue was packed to the brim, and getting a seat felt more like getting into a hot new nightclub, with attendees calling their contacts to convince the doormen to let them inside.