Stars & Their Pets: Julianne's Leading LadyThe former DWTS star and her pup take the lead Tuesday in N.Y.C. Plus: Katharine McPhee's bundled beauties

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RYAN PHILLIPPE

Meanwhile, Seyfried's beau turns dog-walking into a family affair, strolling with son Deacon, 7, and daughter Ava, 11, in Beverly Hills.