As we all know by now, Bethenny Frankel used to babysit Paris and Nicky Hilton. But it turns out another one of The Real Housewives of New York City also had a famous client -- well, before she was a household name, that is. 

On Tuesday, Carole Radziwill shared that she used to babysit Olivia Wilde. The revelation came to light on Twitter on the very same night the 1984 actress appeared on Watch What Happens Live with Andy Cohen (clip above).

Carole spent years rising up the ranks at ABC News, working for a variety of the network's news programs including 20/20 and in the field working on reports from various spots around the globe including Iraq, Cambodia, Haiti, and India. After her time in news, she launched a successful writing career, and the rest is history.

These days, you can catch Carole navigating the drama on RHONY, Wednesdays at 9/8c. Preview, below.