Perpetually primped PR pro Peggy Siegal penned a private guide, “How To Look Like Me at 70,” for her July birthday and has given copies to power pals including Angelina Jolie, Reese Witherspoon, Annette Bening and Emma Stone.

It’s a sequel to her previous installment, “How To Look Like Me at 60.” (“That one’s been passed around Park Avenue for 10 years,” says an insider.)

The socially connected Oscar strategist gave out the new pamphlet — packed with a long list of her doctors, not to mention colorist and dressmaker — at birthday parties thrown for her in London, Southampton and Montauk by friends Jessica de Rothschild, Gigi Mortimer, Perri Peltz, and Amalia and Adam Lindemann.

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