Waterhouse, one of the stars of "Daisy Jones & the Six," has reportedly been dating "The Batman" actor since 2018.
The rumour mill can finally shut down.
TMZ reports that Rihanna gave birth earlier this month.
The Mean Girls star delivered son Luai Shammas in Dubai on Monday, HuffPost can confirm.
“You are already loved beyond words," the US reality star and businesswoman said of her first child with husband Carter Reum.
The Little Mix singer gave birth to the couple's first child last month.
The Netflix series' fashion guru wrote that he was "fully obsessed" with his new son, who was born July 10 via a surrogate.
“Mom has the reproductive organs of a finely-tuned sports car, and in a flash raced this baby over the line just in time for kickoff.”
The actor and comedian revealed she was expecting just two weeks ago.
"A beautiful little blessing has chosen me to be her mother."