Heidi Klum is loving life in her 50s. The supermodel, 52, sat down with PEOPLE for a candid cover interview about her life, career and her approach to aging. Klum, a former Victoria's Secret Angel and current model for Intimissimi, once thought of 50 as "really old," but now that she's here, she's more than ready to embrace this stretch of life.

Klum revealed the expected "secret" to keeping their marriage "spicy." The German supermodel was previously married to Ric Pipino and Seal. Heidi Klum and Tom Kaulitz look like they’re on a never-ending honeymoon,

Klum also revealed that age doesn't necessarily mean that one person knows more than the other. "When our door closes at home and when we’re good, I don’t really care so much