ON TIME: Hollywood types aren't always known for their punctuality, but they certainly seem to like watches — at least the contracts they get to advertise them.

Nicole Kidman will appear in Omega's ads in the U.S. for the first time after being a global brand ambassador since 2005. She was photographed by Brigitte Lacombe wearing the Omega De Ville co-axial chronograph. The ads bow on Monday on billboards and in the November issues of Vanity Fair, W and Gourmet. Other Omega ambassadors include Cindy Crawford and Olympian Michael Phelps.

But Kidman isn't alone in the jewelry world. Catherine Zeta-Jones has scored herself a deal to be the new face of six-year-old jewelry brand DiModolo. Zeta-Jones, who is also the face of Elizabeth Arden and T-Mobile, will be feted on Oct. 4 with a cocktail party at the New York-based brand's Madison Avenue flagship. Benny Shabtai, president and chief executive of the brand, also will launch DiModolo's first timepiece collection that evening. The brand is slated to launch a Couture collection incorporating precious gemstones by the end of the year. Zeta-Jones, who succeeds Téa Leoni, was shot by Rankin for the campaign. The new ads will begin appearing in November issues of W, Vogue and In Style.

Uma Thurman, Gwyneth Paltrow, Diana Krall, Meg Ryan, Kiefer Sutherland and Kim Basinger are among other celebrities who recently have been featured in watch and jewelry campaigns. — Sophia Chabbott