The 23-year-old goal shoot is the tallest player in the league at 1.98m and has previously been linked with the Adelaide Thunderbirds.
Instead she will provide a towering presence for the Steel, who have lost veteran shooter Donna Wilkins to the Central Pulse.
"The Steel presented itself and I know the Steel is a good team so I am excited to represent them," said Fowler, who stands 2cm taller than compatriot and Queensland Firebirds star shooter Romelda Aiken.
"Our club league is not that strong in Jamaica so to play in the ANZ Championship is an opportunity that will not only benefit me but also netball in my country through the knowledge I can share."
Fowler will move to Invercargill in January ahead of their pre-season training and said she had no qualms about shifting from Kingston to the considerably colder climate of New Zealand's deep south.
"I have looked Invercargill up on the internet and I know it's very beautiful. It's going to be hard adjusting to living somewhere new for the first couple of months but I am excited for the opportunity."
Fowler spent last week in Auckland competing at the Fast5 netball world series, where Jamaica were eliminated in the semi-finals on Sunday by eventual champions New Zealand.
