Mariah Carey's sudden ab-fab look at New York's Fourth of July celebration in 2005 had some asking: Are they real? Her rep didn't comment to PEOPLE, but Sally Blenkey-Tchassova at Brazil Bronze salon in New York says the muscled look is easy to get, using "scultped tanning" to create shadow and light around the abdomen. However, she says, Carey's resembles air-brushed makeup. "We wouldn't paint on a six-pack of abs," says Blenkey-Tchassova. "Our procedure is much more subtle than that."