It was due to a mix-up at a fertility clinic.
Two couples in California are filing a lawsuit after giving birth to each others' babies because of a mix-up at a fertility clinic.
Daphna Cardinale and her husband Alexander claim doctors mistakenly implanted an embryo which wasn't theirs during I-V-F treatment.
Both couples gave birth to baby girls a week apart in 2019, and swapped daughters last year.
Daphna says she's still coming to terms with what happened: