In her first interview since the death of her famed plastic surgeon son, Mary Kate Ryan has opened-up about her loss to RadarOnline.com and slammed his former patient, Heidi Montag.

Mary Kate vehemently denies claims by the reality star that Dr. Frank Ryan coerced her into undergoing extensive surgery, and branded Montag's comments about Ryan as "vindictive."

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"I don't like vindictive [people]. He's gone now, forget it," Mary Kate told RadarOnline.com in an emotional interview as she attended the First & Hope Supper Club Benefit For Dr. Frank Ryan in downtown Los Angeles on Monday night.

"What she did I don't think it's right. He's gone."

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Mary Kate is of course referring to an ABC Primetime Special titled Celebrity Plastic Surgery Gone Too Far? where 24-year-old Montag blamed Dr. Ryan for coercing her into undergoing numerous surgeries and for not adequately warning her about all the issues associated with plastic surgery.

During the interview Montag revealed she had had a slew of "work" done including: a brow lift, a nose job, her ears pinned back, her chin shaved, a second breast enlargement, her back "scooped out", fat injected into her cheekbones and lipo on her inner and outer thighs.

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As RadarOnline.com previously reported Montag, then 23, underwent a mind boggling TEN plastic surgery procedures in just one single day, courtesy of Dr Ryan, back in November 2009, totally transforming both her face and her body.

She later claimed Dr Ryan 'misled' her, saying: "I wouldn't do it again...  If I could go back, I'd wouldn't have had them...It was a lot harder than I was led on by my doctor... I didn't know how excessive it really was."

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Mary Kate, however, says Montag asked for all the procedures herself and says that her claims are simply ridiculous.

"One minute she says his hands were created by God and the next minute she's saying she's upset with her body," Mary Kate told RadarOnline.com. "This woman's statements are not true. Everyone knows that's not true. There were people present during the consultations she had with my son. Unfortunately, it's the world we live in and it's sad."

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Mary Kate, who looked elegant in a sky blue evening gown, insists her son was not texting nor talking on his cell phone when he tragically drove his 1995 Jeep Wrangler off a cliff on Pacific Coast Highway in Malibu last year on August, 16, leading to his early demise. Instead, she claims Ryan's dog Jill distracted him.

"I'd say the dog Jill she has very strong hunting instincts," Mary Kate said. "She will chase a plane in the sky and even a bird. If she'd seen a pelican or a seagull, she would have tried to jump and I think he grabbed her and that caused him to steer off. That's the way I feel."

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Dr. Ryan loved his dog but that's just the beginning. The late plastic surgeon even owned a ranch where he housed many types of animals. Mary Kate says that one of his neighbors bought his ranch following his death and even took all the animals as well, and that they are all safe and sound.

Mary Kate says she misses her son and hopes that Monday's benefit will remind people of the good man Dr. Ryan was and how he was a pillar in the community.

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"Today means something for my son," she said as she began to cry. "We're going to keep his legacy alive. He did a lot of good. He worked hard for where he is by himself. It wasn't just given to him."

As for Montag, Mary Kate says she has absolutely no hard feelings toward her - instead, she feels sorry for the reality star.

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"She's young," Mary Kate says. "She'll find out when she gets older about the world she lives in."

RadarOnline.com reached out to Heidi but she declined to comment.

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Dr. Frank Ryan passed away in an unexplained car accident last month after his Jeep veered off the Pacific Coast Highway and plunged down the coast, and RadarOnline.com can reveal his toxicology report is clean.

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According to the forensic science lab report, the Beverly Hills plastic surgeon tested negative for any illegal substances or alcohol in his system at the time of death, leaving the circumstances surrounding the August 16th car accident a mystery.

As RadarOnline.com previously reported, witnesses at the scene of the accident said Dr. Ryan’s brake lights did not come on at any time, he was not slumped over at all in his seat and there were no signs of distress.

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Even with a small bandage on her nose, reality TV star Heidi Montag looked like a million bucks in these new pics of The Hills beauty in a purple bikini at a Costa Rican resort Tuesday, and RadarOnline.com has all the pictures for you.

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Montag last week said she's scouring South America for a doctor to perform a breast reduction surgery after her trusted surgeon, Dr. Frank Ryan, tragically died in an auto accident in Malibu last month.

Several eyewitnesses who saw Dr. Frank Ryan's jeep plunge over the side of Pacific Coast Highway in Malibu last month called 911 to report the accident, and RadarOnline.com has obtained the  chilling  calls.

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Sadly, the calls show that Ryan, 50, was still alive and moving his head when the first passerby arrived at the scene.

Reality TV star Heidi Montag can't take it: Her breasts are too big.

"I'm desperate to go back to normal," The Hills star told Life & Style about her G-cups. "I'm downgrading and going a little smaller, to a D or a double D."

Montag said that nine months after her breast enlargement surgery, she regrets it for the pain it has caused her both mentally and physically.

"I have major anxiety about it. I was taking painkillers but they weren't working, so I stopped. It hurt either way," she told the magazine. "I'm obsessed with fitness, but it's impossible to work out with these boobs. It's heartbreaking. I can't live an everyday life."

Reality TV star Heidi Montag is publicly mourning Dr. Frank Ryan, the Beverly Hills plastic surgeon who came into the limelight after performing ten surgeries on The Hills star last November.

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"My thoughts and prayers go out to his mother, family, friends, and anyone who was ever blessed enough to meet him. He is in a better place," Heidi Tweeted early Tuesday. "I am devastated to hear the news of Dr. Frank Ryan's death. He was the most amazing person I have ever known. He was an angel and changed my life and the lives of everyone he met. He was the most brilliant talented surgeon who will ever exist. Dr. Frank Ryan changed the world."

Dr. Frank Ryan, a Beverly Hills plastic surgeon who came into the limelight after performing ten surgeries on reality TV star Heidi Montag in one day last November, died at the age of 50 after a car crash Monday in Southern California, RadarOnline.com has learned.

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Dr. Ryan's Jeep tipped over the side of Pacific Coast Highway at Deer Creek Road in Ventura County around 4:30 pm, according to police. A passerby called 911. Excavation efforts failed, and the doctor was pronounced dead at the scene of the accident. An autopsy is expected to be performed Tuesday to determine the exact cause of death.

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Police say Ryan's dog was in the car with him, and that the dog survived and was taken to a local veterinary hospital for treatment.

Shortly before his death, Frank Tweeted a picture of his dog at the beach.