Kimberly Stewart – daughter of rocker Rod – is pregnant after a fling with actor Benicio del Toro.
The pair are not in a committed relationship but are looking forward to the birth of the child, which will be 31-year-old Kimberly’s first.
A spokesperson for Benicio, 44, told Life & Style magazine: “Kimberly is pregnant. Benicio is the father and is very supportive.
“Although they are not a couple, they are looking forward to the arrival of the baby.”
The news has come as a surprise to many as the pair kept their dalliance secret and were never photographed together.
It will be the first grandchild for Rod, 66, whose eighth child, Aiden, was born in February this year.
Kimberly, who used to be best friends with Paris Hilton, has dated Jack Osborne and Rhys Ifans in the past.
Benicio’s exes include Alicia Silverstone and Scarlett Johansson.