Barron Hilton reportedly suffered lasting damage after being punched in the face last week.
The younger brother of Paris Hilton was allegedly attacked by Ray LeMoine at a party in a Miami mansion on Friday (06.12.13) and will require "extensive surgery" to repair his facial injuries.
A source told RadarOnline.com: "Barron is slowly beginning to recover, but his injuries are brutal. He is telling his friends and family that Ray caused permanent damage to his face, and he suffered several bone fractures in his face.
"His nose was broken and will require extensive surgery to repair the damage. The swelling will have to go down before any work is done to attempt to repair Barron's face. He is looking at multiple surgeries."
Barron Hilton was said to have resisted fighting back during the assault.
Speaking on 'Watch What Happens Live', Barron's auntie, Kyle Richards, claims he didn't even fight against his attacker.
She said: "He is the most kindest, gentle soul you ever met: He would not lift a finger against anyone.
"He made a comment against her that wasn't polite, and she went up and said, 'Want to speak against me? This is what you get.
"And these people jumped him and beat his face. I just saw him the night before I arrived here and he was all broken - his face.
"I said, 'I can't even imagine you even fighting back, because you're such a gentle person.' He said, 'I didn't fight back.' "
Asked whether she believed troubled 'Mean Girls' star Lindsay was behind the incident, Kyle added: "Allegedly - obviously I'm going to say [that], because I wasn't there - I'm going by what you guys here, and what my family tell me. Allegedly, Lindsay called the hit on my nephew and he was beaten up."
Lindsay has not made comment since the incident, while Ray is believed to have escaped to Cuba.
Speaking from the Communist island, he said: "I'm scared of the Hiltons and Paris' Cash Money crew [she has a deal with the record company], so I am seeking refuge in Cuba. Castro hates the Hiltons and took their Havana hotel in 1959 as a base after conquering Cuba, so they are stoked I'm coming down to hate capitalism. Viva la Lohan!"
Meanwhile, police are reportedly desperate to speak to Barron - who claims he was attacked at the request of fellow guest Lindsay Lohan, who thought he had "trash talked" about her - but he has failed to respond to their messages.
According to TMZ.com, until officers speak with Barron again, they will be unable to make any arrests in the case.
Blogger Ray has also denied the attack, and insisted Lindsay had nothing to do with any row between himself and the alleged victim.
Paris Hilton has since vowed to make the perpetrators pay for what they did to her brother.