She is almost always spotted out with her 18-month-old daughter Delilah.
But Kimberly Stewart also makes sure to fit her daily exercise regime into her busy schedule.
The daughter of famous rocker Rod was once again seen heading to a gruelling workout on Wednesday.
She wears them well: Kimberly Stewart displayed
her slim pins in a pair of clingy leggings as she went to her daily
workout on Wednesday
The socialite paired the attire with a black sports bra worn underneath a flimsy grey tank top.
Make-up free, Kimberly had her long blonde locks out in a straight style and shielded her eyes with some black-rimmed sunglasses.
The pièce de résistance of her ensemble was her expensive Goyard designer handbag, which retails for over a thousand dollars.
Since giving birth to Delilah in August 2011, Kimberly has been spotted going to the gym almost ever other day.
Bare-faced: Make-up free, Kimberly had her long
blonde locks out in a straight style and shielded her eyes with some
black-rimmed sunglasses
While the pair are no longer an item the two share parental duties and appear to be on friendly terms.
The model and actress told Hello! magazine: 'Benicio's very involved; he and Delilah have a very special bond. She definitely looks like her dad, but she has my legs and eye colour.'
Kimberly is the second eldest of Rod’s eight children and her mother is actress and former model Alana Stewart, who was Rod’s first wife.
Kimberly's younger brother Sean, a 32-year-old musician, has recently started dating Real Housewives of Beverly Hills star Adrienne Malouf, 51.
Doting mother: Kimberly is mother to 18-month-old Delilah whom she shares with actor Benicio Del Toro