the DeCinque sisters
Left to right (or possibly right to left): identical twins Anna and Lucy DeCinque Facebook

If you think you're seeing double, don't worry, it's not the drink – these two sisters from Perth, Western Australia have spent a small fortune to make them look even more identical.

Born one minute apart 28 years ago, Lucy and Anna DeCinque have been inseparable ever since. They share a home with their mother, a job, a Facebook account, and have spent some A$200,000 on plastic surgery to make sure they look even more alike. They even claim to feel each other's pain at the dentist.

Not content with borrowing one another's mini-skirts and stilettoes, Lucy and Anna reveal they also share similar tastes in men – or rather, one lucky man:

"We're dating one boy at the moment," says Anna. "There are three people in our relationship. We're sharing."

"It's not really weird to us," says Lucy. "We have one boyfriend and all of us share the same bed ... We have the same taste in everything, so obviously we're going to like the same boy, too. We're all together when we have sex, and if we like the same guy, so be it."

Despite their glamorous appearance, the DeCinque sisters job-share serving meals to old people in the district near where they live.

"The residents in the nursing home where we work love seeing us together, we brighten up their day," the twins say in a TV interview, "We love the elderly, it's our passion – that's what we love."

The twins, who spend most of their income on surgery, breast implants, lip enhancement and tattoos, speak in tandem, often completing each other's sentences.

"We never wear the same outfit twice when we go out," says Lucy (or possibly Anna). "Everything has to be new."

"When we go out, we get so many guys saying they want to marry the both of us or date the both of us," adds Anna (or possibly Lucy).

"We can't imagine a day when we're not in each other's company. And, to be honest, I don't think that would ever happen," says one or the other of the twins.