Paris Hilton Reveals the Reason Why ‘I’ve Never Felt Happier in My Life’ (Exclusive)

Hilton tells PEOPLE about releasing her new album, ‘Infinite Icon,’ as a wife to Carter Reum and mother to son Phoenix and daughter London

Paris Hilton‘s return to music couldn’t have come at a better time.

The businesswoman and musician, 43, released her long-awaited second album, Infinite Icon, on Friday, Sept. 6, and not only does the record mark her first full-length release since 2006’s Paris, but it’s also her first as a wife and mother.

“My first album was so much fun, and I feel like that was more my party girl era, but I wasn’t taking the music as seriously,” Hilton tells PEOPLE of Paris. “I’ve been through so much in my life and grown in ways I never imagined. I feel like [Infinite Icon] really represents that evolution.”