First Cousins Hailey and Ireland Baldwin at Mission: Impossible – Rogue Nation Premiere

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Hailey Baldwin joined her first cousin Ireland Baldwin — as well as Alec Baldwin — on the red carpet at the “Mission: Impossible – Rogue Nation” premiere on Monday in New York City’s Times Square.

Hailey Baldwin shows off her off-the-shoulder mini "Kristelle" dress by Elizabeth and James at the "Mission Impossible - Rogue Nation" New York Premiere at Duffy Square in Times Square on July 27, 2015, in New York CityHailey Baldwin shows off her off-the-shoulder mini “Kristelle” dress by Elizabeth and James at the “Mission Impossible – Rogue Nation” New York Premiere at Duffy Square in Times Square on July 27, 2015, in New York City

The 18-year-old American model donned a flirty off-shoulder mini “Kristelle” dress by Elizabeth and James.

Ireland’s father, Alec Baldwin, is the older brother of Hailey Baldwin’s father Stephen Baldwin. That makes Hailey and Ireland first cousins.

Hailey Baldwin and her first cousin, model Ireland Baldwin, pose with kissy facesHailey Baldwin and her first cousin, model Ireland Baldwin, pose with kissy faces

She styled the sexy frock with a pair of Stuart Weitzman “Legwrap” gladiator sandals in signature goosebump leather.

Ireland Baldwin and Hailey Baldwin flaunt their sexy legs on the red carpetIreland Baldwin and Hailey Baldwin flaunt their sexy legs on the red carpet

Do you think Hailey looked sexy or trashy on the red carpet?

We’ve previously spotted the same sandals on Elizabeth Banks, Emma Roberts, Sandra Bullock, and Hannah Davis. You can find them at Nordstrom and Zappos.

Hailey Baldwin shows off her feet in black strappy Stuart Weitzman sandalsHailey Baldwin shows off her feet in black strappy Stuart Weitzman sandals

Stuart Weitzman Lace-Up Gladiator Sandals, $498 at Nordstrom and Zappos

Stuart Weitzman Lace-Up Gladiator Sandals

Credit: WENN / Ivan Nikolov