The incident happened during the Nina Ricci show in the French capital Wednesday, the British newspaper the Liverpool Echo reported.
During the show, two half-naked protesters ran down the runway and one of them grabbed Saker.
"I was the 19th girl out of the catwalk and I could hear screaming behind me," the 18-year-old model from Liverpool said. "The next thing I just see half-naked women with black marker pen scrawled across their bare chests and that's when she came at me."
"As she grabbed by arm she lifted my skirt exposing me -- I pulled my arm back with such force that I landed a punch square on her nose," Saker said. "I was so angry but I knew I had to be professional so I carried on walking with a bit of sassiness. My scouseness [a scouser is a native of Liverpool] came out a bit but I wish it had come out a bit more. Thinking about it now I wish I'd pushed them both off the stage because they ruined my favorite show."