Recently it has become far less common to see adult females bearing twins or triplets.

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However, this also increases the chance that a woman will give birth to twins or triplets.

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These odds, however, assume the couple is amenable to aborting one or more of the fetuses if more than one embryo successfully implants and twins or triplets are indicated.

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In 2011, 11, 330 women gave birth to twins, 172 to triplets and 3 had quads or more.

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Swimmers on Coney Island, identical twins at a Christmas party for twins and triplets, ageing fur-coated women on buses or smoking at diner counters were caught at awkward moments, all revealing more about themselves than they might wish.

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