I don't have reliable information about a specific music artist named "Olivia Jean" in my training data. To provide an accurate biography for your merchandise store, I'd recommend:
1. Checking the artist's official website or social media
2. Looking at their streaming platform profiles (Spotify, Apple Music, etc.)
3. Contacting the artist's management or record label directly
This will ensure the biography is accurate and up-to-date for your customers.