The 37-year-old socialite took World War II veteran Sidney Walton to Phillipp Plein's New York Fashion Week show.
A source told the New York Post: "Paris has known Sidney for many years. He's a huge fan of Paris', and he loves to attend her DJ shows and events . . . He thinks she's the sweetest and most beautiful girl.
"She has a big heart and wanted to make his 100th birthday special."
The fashion show featured a three-course meal and a performance by Lil Pump and Sidney seemed to enjoy the entertainment.
Meanwhile, the beauty recently insisted she will be keeping her $2 million 20-karat diamond engagement ring following her split from Chris Zylka, saying: "It's mine."
'Sinners' and 'One Battle After Another' face off at drama-filled Oscars
Cillian Murphy returns to 'Peaky Blinders' world with new film 'The Immortal Man'
UAE National Orchestra releases musical tribute honouring nation’s defenders
'Stealth' Pokemon hit boosts Nintendo Switch 2 momentum sentiment
Seoul to toughen security for massive BTS comeback concert
'KPop Demon Hunters' headed to the Oscars
