Victoria arrives in London with cheery sons Cruz, 3, and Romeo, 5. Plus: America Ferrera, Reese & Jake, Oprah and more

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WHO'S THAT GIRL?

An undercover Madonna faces waiting photographers Monday as she leaves her apartment in New York City, where she's rehearsing for an upcoming tour. The singer, who recently issued a statement to PEOPLE that she and husband Guy Ritchie are not divorcing, denies playing a role in the demise of baseball star Alex Rodriguez's marriage.