Pamela Anderson has revealed that the stress of writing her own memoir, Love, Pamela, caused her to gain 25 lbs.

The Baywatch star – who didn't use a ghostwriter for her upcoming book – admitted that she had a "physical reaction" to penning her life story and began to see her weight gain as a "puffy suit of armor" that protected her. "It was crazy, but I had a physical reaction to telling my story," the 55-year-old said on The Howard Stern Show on Wednesday.