While nursing Harlow, now 3, in 2008, Nicole Richie said, "I really don't like [having big boobs]." Times sure have changed!
An insider tells the new issue of Us Weekly that the "Fashion Star" mentor got implants this summer.
PHOTOS: Nicole's wild-to-mild transformation
"In the past, she said she wanted a lift, though we never thought she was serious," another source says of Richie.
PHOTOS: Can you guess the bra sizes of your fave celebs?
Still, "she's been open about it to friends," notes the first insider.
Richie flaunted her fuller physique while vacationing with pals in Mexico on Sept. 24. It's a stark contrast to the flat-chested bikini body she showed off just one year earlier.
PHOTOS: Plastic surgery nightmares
The second source adds that the House of Harlow 1960 designer wanted to improve her bustline for hubby Joel Madden, 32. "The pregnancies took a toll. She said breast-feeding killed what boobs she did have!"
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