Children who are identical to one another
In the order in which they were married, each of the three females had a daughter and a son, and so on. After having daughters, all of the women went on to have sons within a respectable amount of time following the birth of daughters. Is there anything else that comes to mind?
For most parents, raising their children together and seeing them grow up with friends they can call their own is a dream come true. Even though their days of playing with the boys as their Playboys are long gone, their personalities have remained primarily unchanged and they could still be seen as the Triplets.