Roosters veteran Chloe Caldwell.

She is Redfern through and through and one of the most feared players in the women's game but Chloe Caldwell has always been a Sydney Roosters girl at heart.

Caldwell was one of seven players in the Rabbitohs line-up that was defeated by Mounties in the Harvey Norman NSW Women's Premiership final last weekend.

A day later she swapped her Rabbitohs colours for a Roosters kit in preparation for the NRL Holden Women's Premiership kicking off in September.

"I'm pumped to be playing for the Roosters," Caldwell told NRL.com.

"My family go for the Roosters and I've gone for them as well. It's a perfect match. I played for the Redfern All Blacks for a very long time and started with the Rabbitohs this season.

"It's a bit weird switching over so quickly with the rivalry both clubs have but whatever guernsey I put on I play for that team. I just love the game and I play it hard."

Despite being 30, she is far from the oldest player in the new competition. Her Roosters teammate Kylie Hilder is 42, while Warriors player Lorina Papali'i is 41.

Caldwell represented the Jillaroos in 2010 and has been around the game for more than a decade.

"I've got maybe 5-6 years left I reckon, I haven't shown completely what I've got," Caldwell said.

"I'm still loving my footy, I live and breathe the game. I've got lots more to give. It does inspire me when those girls are older than me to keep going."

The Roosters, who will play a pre-season fixture against North Sydney, will train as a full squad for the first time this week with work commitments and travel disrupting their early preparations.

"A lot has changed since then, the way the girls train and [their] performance," Caldwell said.

The game has developed a lot around fitness, commitment and sticking at training day in and out. Even things like eating the right foods ... I try my best [with all that].

"It's been good, it keeps me more committed and focused for other goals and dreams to finish my career off."