Katy Perry's sweet, new penthouse in WEHO's iconic Sierra Towers!

Katy Perry buys Garmin billionaire’s customized Sierra Towers penthouse.

This condo has 2 bed/3 bath, 3,001 sq. ft. of living space, and the HOA is $5,294 a month.

Building amenities include a new pool, spa, gym, conference facilities, 24-hour security, and valet services.

Asking price: $12,499,500

Selling price: $11,000,000