Killian Marcus Gastineau And Sister Brittny Meet For First Time

Brittny Gastineau in L.A. for her birthday party last November. INFDaily.com.

Brittny Gastineau knew she had a half-brother. Last week he looked her up.

There's always soap-opera-level high-drama surrounding these filthy-rich socialite families like the Hiltons, the Johnsons, and now the Gastineaus. Gastineau Girls star (and close Kim Kardashian pal) Brittny Gastineau has just revealed that she's always known she had a half-brother from her dad Mark Gastineau's relationship with Brigitte Nielsen...but only last week, after 20 years, did the siblings finally meet.

Mark Gastineau was married to Brittny Gastineau's mother Lisa before he left her for Sylvester Stallone's ex-wife, Danish actress and model (and now crazy reality personality) Brigitte Nielsen. Apparently Nielsen and Mark Gastineau were engaged in the late 1980s and had a son named Killian Marcus Gastineau.

Killian Marcus, who's now 20, was recently in the U.S. (he works at a wine and champagne bottler in Italy) and wanted to meet his half-sister Brittny, who's seven years his senior. "I've always known I have a half-brother, I was told as a kid," Brittny told People, "but he was totally off the radar. It was like he didn't exist."

However it's being reported that Brigitte Nielsen and the former Lisa Gastineau (Brittny's mom) bumped into each other at Ivana Trump's wedding in 2009 and exchanged phone numbers. Brittny says that Brigitte "texted my mom and said Marcus is in town and he'd love to meet me."

Brittny said her brother is 6'5", blonde and very cute, resembling his mother. She says, "It was very weird and surreal. I didn't cry. I'm too tough to cry. But we hugged, we talked about old stories. He said he watched Gastineau Girls in Italy, so he knew what I looked like." Brittny added that the meeting was "very emotional for my mom. I mean, my dad left her for Brigitte, and she had a baby with him, but she was so supportive. She wanted me to meet Marcus."

Mark Gastineau, father of Killian Marcus and Brittny, is a fomer player for the New York Jets.