Undercover police officer Robyn Morrison, 35, infiltrated drug gangs and snared paedophiles during her 10 years in the Australian police force.
Now the Aussie stunner has set her sights on the world and will represent Britain at a global beauty pageant after being crowned Mrs Galaxy UK.
Mum-of-two Robyn, who now runs a cheerleading school, said: “I couldn't believe it when I won the pageant.
“I was a bit unsure about entering - I am a mum.
“But I thought what the hell and did it for a bit of fun and bought my dress for £50 from TK Max and bikini from Next.
“The other women spent thousands on their dresses and were very serious.
“People assume that women who participate in beauty pageants are airheads and bimbos - but I'm definitely neither of them.
“It is not something I have ever done before. Now I am going to America because of it.”
[Related article: Miss England hopeful reveals her transformation]
Robyn's remarkable story mirrors Sandra Bullock's character in the Hollywood blockbuster Miss Congeniality which saw an undercover cop win a beauty contest.
Robyn first worked as a bobby on the beat when she joined the police aged 18 after studying dance and drama at school.
But after a few years she became an undercover cop in Cabramatta, an area in Sydney which is notoriously dangerous and run by Vietnamese gangs.
Acting the part was not a problem for Robyn, who played policewoman Terri Hall in the soap Neighbours for two years.
Brave Robyn, who is originally from Australia but has lived in the UK for the past six years, posed as a 'junkie' and had to socialise with drug dealers, prostitutes and pimps.
She even had her two front teeth knocked out when she got into a fight after officers who didn't know she was undercover stopped her as she tried to buy heroin with other users.
Robyn, who is married to Bradford Bulls star Glen Morrison, added: “I'm proud of my police background - I worked tirelessly for years trying to keep the streets safe and drug free.
“I've got some really horrible stories but it doesn't haunt me. It has not traumatised me. I don't regret doing it.”
After one year working undercover, Robyn was moved to an anti-theft unit before she went to work in child protection, dealing with paedophiles.
She competed in the Miss Galaxy UK contest six weeks ago in Cheshire and won a holiday to Florida.
She also won a host of other awards, including best swimwear, best fashion, most photogenic and best smile.
She will travel to America to represent the UK in Miss Galaxy next month.