The ‘Coronation Street’ stars both shared photos of seven-year-old Scarlett in her first major modelling deal with the retail brand.
O’Brien, who is now engaged to personal trainer Adam Crofts, also tweeted out the same news article about her daughter.
“Proud mummy!” she wrote.
Carol Kane, joint CEO of Boohoo, said, according to Manchester Evening News: “Ryan Thomas is a lifelong friend of the brand and so we were delighted to be able to make Scarlett Thomas the face of the girlswear collection.
“She looks beautiful in all the pieces.”
Thomas and O’Brien dated from 2003 to 2009. Their daughter was born in October 2008. O’Brien is also mum to two-year-old Beau with her current partner Adam Crofts.