She notes the stark contrast between the typically lithe light and muscular physique of a dancer, and the softer, rounder contours of a pregnant woman, and delights in it.

"You can't get a 25-year-old size 8 ballet dancer type body to move with the weight, the gravitas or the sheer cheerful spirit a pregnant woman," she said.

Lorent promises that no previous dance experience is necessary to audition for a part in MaEternal. The only requirement is that anyone wishing to take part should be up to 32 weeks by the time of the performance on May, 14. Beyond that, she says, the risk is too high of unplanned dramas on stage.

As well as recruiting 12 pregnant women, Lorent has also signed up Lynn Campbell, an active birth therapist who runs pregnancy classes in and around Newcastle, to advise on the movements and abilities of expectant mothers.

"Pregnant women do sometimes feel heavy and weighed down by all the changes, but sometimes they also feel fascinating and beautiful and amazing," Campbell told Reuters.

"Culturally we don't always have the words to celebrate the beauty of pregnancy, and although people are often fascinated by it, they don't know how to express that, so the say things like "Aren't you big!"

"So this is a real opportunity for pregnant women to be seen in a new way."