Forget third time’s the charm, Janice Dickinson is putting her own twist on happily ever after.

The feisty ex-America’s Next Top Model judge has vowed that her fourth marriage — this time, to Dr. Robert Gerner – will be her final walk down the aisle.

 “I know I have found ‘Mr. Right,’” Dickinson told Celebuzz, in an exclusive interview.

The 57-year-old – who has had several high profile flings with the likes of Jack Nicholson, Mick Jagger, Bruce Willis, Warren Beatty and Sylvester Stallone – also dished new details on her shock engagement, sealed with a 5-carat diamond ring from Harry Winston.

“We are going to have a big splashy Hollywood-style wedding for our friends and family,” Dickinson added.

The model was previously married to Ron Levy and then to film producer, Simon Fields, for six years from 1987 to 1993, with whom she has a son Nathan, 25.

She tied the knot with third husband Albert B. Gersten in 1995, but the pair broke up the following year. Dickinson also has an 18-year-old daughter Savannah with former boyfriend Michael Birnbaum.

For once, the outspoken “world’s first supermodel” was left speechless after Gerner, whom she calls ‘Rocky’, surprised her with a proposal at LAX Airport last week.

“Rocky was about to fly out to a conference when I said to him, ‘It’s sweet to see your boyfriend before he flies away’ and he replied, ‘I would rather be your fiance’,” she said.

“I had to catch my breath because it was so romantic and although he did not have a ring I said ‘yes’ because he’s the most wonderful person.”

Gerner presented his future wife with a stunning 5 carat vintage-style diamond ring a few days later, leaving her one happy woman.

And although they have only been dating for three months, the new man in her life has already been given their blessing by both her son and daughter, who will play key roles in the wedding, she said.

Despite what the cynics might think, Dickinson believes that she’s finally found somebody she can trust and settle down with after a string of failed marriages and relationships over the years.

“Look, the last time I was married was 17 years ago, but this time it just feels right,” Dickinson said. “Robert is the most intelligent, caring and kind man.”

“We can talk about anything and we even find each other finishing one another’s sentences a lot of the time.”

Their children have actually brought them closer together.

“He has his own grown children while my daughter Savvy will be our maid of honor and my son Nathan will walk me down the aisle. They are both very happy for me.”

In her memoirs, No Lifeguard on Duty: The Accidental Life of the World’s First Supermodel, and the follow-up, Everything About Me is Fake … And I’m Perfect, Dickinson describes in detail her experiences with plastic surgery, anorexia, bulimia, alcoholism and a sexually abusive father.

But now she claims to have found true happiness later in life after enduring a string of heartbreaks along the way.

“Look, I’m really happy and content with Robert and we plan to have a big, big, celebrity-style wedding for our family and friends next year,” she gushed.

“It will be a big event that will out-do Brad Pitt and Angelina Jolie’s wedding!”

What do you think – will Janice Dickinson’s fourth wedding be her final walk down the aisle?