"Look who popped up in my Hometown BARBADOS"RiRi posted on her Twitter!
Oprah made the visit for an upcoming interview special for her show "Oprah's Next Chapter".... and also posted a preview photo on her own Twitter...
"@rihanna and I finishing up interview . What a refreshing surprise she is!"
You can find out what Rihanna and Oprah spoke about in their one-on-one interview airing on OWN August 19.