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Kissing cousins! Hailey Baldwin plants smooch on Ireland
Their fathers are brothers. And it looks like they are best friends because of it.

During the Monday night premiere of Mission: Impossible - Rogue Nation in New York City, Hailey Baldwin, 18, (whose father is Stephen) was seen planting a kiss on her cousin Ireland Baldwin, 19, (whose father is Alec).

The blonde beauty - who has been romantically linked to Justin Bieber - also took the opportunity to show off her long legs in a short black dress.

Tags: #HaileyBaldwin #IrelandBaldwin