'World's most identical twins' want babies at the same time with shared boyfriend

The twins want to be pregnant at the same time. Photo / Instagram

Anna and Lucy DeCinque, dubbed the "world's most identical twins", have big plans for the future.

The Australian twins, who share boyfriend Ben Byrne between the two of them, say they want to get pregnant at the same time and have his babies.

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❤ MERRY CHRISTMAS TO ALL ❤ We hope everyone had an amazing day.🙂🙂 Much love from the twins 👭 💚💚💙💙 . #food #smile #love #beautiful #life #summer #celebrating #special #fitness #happy #food #instalike #music #family #travel #bestoftheday #amazing #instamood #pictureofday ure #photogaphy #photo

A post shared by AnnaLucy DeCinque 👭 (@annalucydecinque) on Dec 25, 2018 at 7:51am PST

The 33-year-old twins know it'll be no easy feat for the boyfriend but they are determined to try.

"Our mum's actually convincing us to give birth naturally," the twins told Australia's "Today" TV show.

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💛 DOUBLE THE LOVE FOR BEN 💛 Better All Together 🙋‍♀️🙋‍♂️🙋‍♀️ #relationshipgoals #shareboyfriend

A post shared by AnnaLucy DeCinque 👭 (@annalucydecinque) on Jan 2, 2019 at 1:52am PST

"We need to be pregnant at the same time," they added.

"It's going to be another challenge. There's a lot of pressure on Ben."

The twins have previously expressed they'd like to marry their boyfriend but polygamy is banned in Australia under the Marriage Act 1961.

"I think we should marry the same man," they said.

"This is what works for us. People need to get that. We aren't hurting us."