The 38-year-old reality star - who recently admitted to judging couples with large age differences before meeting her 64-year-old husband Alec Baldwin - took to Instagram to share the snap of sixth child.
Relationship Expert and Founder of Wingman Tina Wilson suggested the trend is driven by a desire for men to show the world they are still young and virile. Here, FEMAIL looks at some of the broods.
The yoga instructor is currently expecting to welcome her seventh child, whose name and gender have not been revealed as of yet, with her longtime husband Alec Baldwin.