Killian Marcus Gastineau is the secret 20 year old brother of reality star and socialite Brittny Gastineau!
Brittny's father, former NFL player Mark Gastineau, cheated on his wife Lisa with actress Brigitte Nielsen resulting in Killian being born. Brittny had no idea she had a brother until last week when the pair finally met and had dinner together. "It was very weird and surreal. I didn't cry. I'm too tough to cry. But we hugged, we talked about old stories." The dinner came about after her mother mother ran into Nielsen at Ivana Trump's wedding. Britney added, "It's kind of hard to know someone in just one dinner, so I'm definitely going to stay in touch with him. But I'm going to have to learn Italian!"
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