By Toni Jones PUBLISHED: 07:48 EST, 6 June 2013 | UPDATED: 13:00 EST, 6 June 2013 The Kardashian sisters love to keep things in the family, and recently mother-of-two Kourtney admitted that she would be happy to be breastfeed sister Kim's baby daughter. Pregnant Kim isn't convinced by the idea, calling it 'disgusting', but the idea of wet nursing is actually an age-old parenting method that dates back to the ancient Greeks. Sisters Bunty Rowe and Kyle Aldridge have seven children between them and often breastfeed their neices and nephews. They are both members of the pro-breastfeeding group Lactivist and say that cross-feeding is natural and convenient and has even brought their children closer together.
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Bunty Rowe, 26, and Kyle Aldridge, 30, have cross-fed for four years
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They have seven children between them
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Say that it is historically what women have always done
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Claim it has brought their families closer
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Want to start charity for women who need to nipple share due to emergency
Her sister @placeholder, 30, who has five children, explained: 'There was never any big conversation about it it happened naturally  when my sister went out one day and was nervous [about leaving her daughter] and I said if she cries shall I feed her?'