The World Cup winner and Olympic gold medallist has signed up for the Premier Rugby Sevens (PR7s).
The competition is held over multiple tournaments with the men's and women's teams vying for one trophy.
Tui said she was thrilled to be involved in competition which provided equal opportunities for men and women.
"I've been a massive fan of Premier Rugby Sevens and what they've done for women's rugby since they formed in 2021 in the United States.
