Nicole Richie and Kate Hudson share more than just a free-spirited demeanor!
The fashion designer, 30, and the Something Borrowed star, 32, have both received implants from Beverly Hills plastic surgeon Garth Fisher, several insiders confirm to Us Weekly.
Fisher -- whose celebrity clients include Olympian Bruce Jenner and his business-minded wife Kris -- first performed Hudson's breast augmentation in March 2010.
Richie, meanwhile, had other reasons for getting her boobs done this summer.
"In the past, she said she wanted a lift, though we never thought she was serious," an insider tells the new issue of Us Weekly (on newsstands Friday).
Adds a second source: "The pregnancies took a toll. She said breast-feeding killed what boobs she did have!"
A rep for Fisher denies he treated Richie.