The stars were rocking Cartier at the Rodeo Drive Walk of Style Awards in Beverly Hills on Thursday night.

Decked out in diamonds, Demi Moore singled out one piece that stands above the rest. Pointing to her ring finger, she said, "The best one is right there." She was referring to her 1937 Cartier wedding band that represents her marriage to Ashton Kutcher.

Princess Grace, known in Hollywood as Grace Kelly, was posthumously honored with the Rodeo Drive Walk of Style Award. Her son, Prince Albert II of Monaco, accepted the award on his mother's behalf.

Debra Messing told ET her true feelings towards Princess Grace, saying, "You can't think of fashion as we know it without thinking of Princess Grace. She is glamour. She is Hollywood. She's modern, elegant, sophisticated, and graceful, no pun intended. She really defined a whole era..."

Jewelry icon Cartier was acknowledged with the award as well for the company's contribution to film and the red carpet. Gabrielle Union told ET, "Cartier is kind of like jewelry royalty. We don't really get that too much in LA. Royalty to us are the Kardashians."

While she calls it "a bad episode of 'SVU,'" Gabrielle admitted that she is "engrossed" in the "balloon boy" saga. She said, "Me and little Falcon, I'm going to whisk him away. He's going to be like my new Elian Gonzalez."