The 41-year-old designer has earlier designed a bodysuit for the pop singer's New year concert in Las Vegas, reported Daily Mirror.
"Julien is a huge Beyonce fan so he's really excited about producing some custom-made, bespoke outfits," the source said.
"This is a huge coup for him. Beyonce loves his work and has often worn his outfits."
The pair first worked together in 2011, collaborating on several items.