"I was an unknown model, and if I had spoken out or complained, I would not be where I am today; I would not be famous," Ratajkowski, revealed to People magazine at the CoinGeek Conference cocktail party.
Ratajkowski now feels that she has evolved to a point where she is able to sit with and talk about the alleged assault by Thicke and hopes her fans will understand.
"I wrote a book about the evolution of my politics, and that includes a lot of different experiences from my career and my life, and the way that I felt and thought about those experiences [has] evolved," she told People. "I hope people are able to read the essay and understand the nuance behind these kinds of situations."
In the Blurred Lines video, Ratajkowski is one of three models who are seen dancing around Thicke. The video also stars rapper TI and singer Pharrell Williams. In it Ratajkowski is topless, with only flesh coloured briefs on. It seems that appearing in the video in such skimpy attire gave the model reservations from the start. She told UK's InStyle magazine in 2015: "I wasn't into the idea at all at first. I think I came off as a bit annoyed in the video.
"Now, it's the bane of my existence. When anyone comes up to me about Blurred Lines, I'm like, 'Are we seriously talking about a video from three years ago?'"
Ratajkowski reveals in her book of essays that she did warm up and start enjoying the video shoot, until Thicke, who was apparently intoxicated, began to "behave badly".
"He smiled a goofy grin and stumbled backward, his eyes concealed behind his sunglasses. My head turned to the darkness beyond the set. (Director Diane Martel's) voice cracked as she yelled out to me, 'Are you okay?,'" the book states.
The experience made her feel "naked for the first time that day", she said.