06/24/2011 AT 7:45 AM ET
“I feel good! I love that I still have my curves,” she told PEOPLE of her sexy photo shoot, which costarred schnauzer-bichon-poodle mixes Maddee and Minnie.
The pair of pooches was birthed by Sparks’s dog Maggie in March, alongside two more puppies that the singer named Millie and Molly. A month later, Sparks told PEOPLE Pets she had found a home for three of the four newborns, but that the “runt” of the litter, Minnie, would be staying with her.
“I just bonded with her,” she said. There’s nothing like puppies.”
[RELATED_TEXT “Can’t get enough pet news? See more on PEOPLE Pets