Identical twin sisters Anna and Lucy DeCinque, 30, have shared everything since birth. They sleep in the same bedroom in their shared home with their mom. They share similar looks. The twins have even agreed that they would share a boyfriend.

The Australia-based sisters have been dating mechanic Ben Byrne, 32, for four years and believe that the relationship is working out. They have tried having separate boyfriends before, but the men didn't understand the twin's closeness.

On the other hand, Byrne gets the girls since he's also one half of a fraternal twin. "[He] understands we want to be together all the time. He understands the twin thing and the very close bond we have with each other," the sisters said.

The DeCinque sisters are pursuing the concept of sharing further by planning to get pregnant at the same time. "If she got pregnant I'd make sure I got pregnant," Anna DeCinque said. "I'd make sure it happens for our body, like both the same."

Bryne has a big part in this plan, but the sisters are willing to undergo IVF to ensure that the pregnancy for both women would happen. However, it doesn't matter if they won't be able to give birth to their future babies at the same day or time. The ladies only want to be pregnant together.

Undertaking a scientific procedure, such as IVF, is not new to the twins as they have admitted spending more than $250,000 in cosmetic procedures to maintain the same exact features. The twins got breast implants, skin peels, eyebrow tattooing and lip fillers. They were able to fool a face recognition technology once in Japan, when the machine could not tell their faces apart.

"If she walks a few meters, I need to walk a few meters because we have to burn the same calories," Lucy DeCinque said. "Our diet is identical. Our food has to be identical. The same glass of water we measure. The same size of chip packets we have to measure."

The twins were featured in the "Insight" current affairs show in Australia Tuesday. Watch part of the episode with the sisters' interview in the video below: