Actress and TV host Haylie has given birth to daughter Ryan, her first child with fiancé Matt Rosenberg, says E! News.
No further details about the newborn have been released.
Haylie – who starred with Hilary in the movie Material Girls - announced her pregnancy in December, and later confirmed it would be a little girl.
The 30-year-old – who hosts a cooking show in the US called Real Girl's Kitchen - celebrated at a baby shower in March attended by friends and family including Hilary.
Little Ryan was a late Mother's Day treat for Haylie – the US celebration fell on Sunday.
For Hilary, meanwhile, it's a new niece and a playmate for her son Luca, three. While Hilary hasn't referened the birth on Twitter, she did post a heart emoji this morning. Aww.
Congrats to Haylie and Matt!