She's an exciting young talent who's ready to prove herself on the biggest stage.Northern Ireland Manager Kenny Shiels
The 22-year-old midfielder moves to the Second City from current Northern Ireland Premiership champions Linfield.
McCarron had been with the Belfast-based club since 2017 and went on to become a firm favourite with the Linfield fans and was recognised for her contribution to the team by being awarded the Player of the Year award in 2018/19.
She is a three-time Irish Premiership Women winner with Linfield, whilst she also helped guide The Blues to the Women’s Premiership League Cup in 2018.
A holding or central midfielder, she also spent three years playing Champions League football with the Club.
Internationally, McCarron has been capped by her country seven times at senior level, most recently in the nation’s goalless draw with Wales in November last year.
By joining Blues, McCarron has created footballing history by becoming the first Northern Ireland woman to move directly from a senior Irish League club to the English top-flight.
Welcoming her arrival, Blues Women's Head Coach Carla Ward said: "We're delighted to get Chloe over the line.
"She's an exciting young talent who's ready to prove herself on the biggest stage.
"We've seen her go toe to toe with the likes of Norway internationally and showed she's more than ready to step into the WSL."
Also supportive of the move was McCarron’s Northern Ireland Manager Kenny Shiels who feels it is a great opportunity for both the player and her new club: "Chloe is one of the smartest players in women's football," he said.
"Her awareness of space and movement are distinct categories that she will bring to her new club.
"I am very excited by what she has to offer the WSL. I am very confident that she can hit the ground running in her new environment.
"Since I have been in this position, I have seen remarkable progress from Chloe and Birmingham have hit the jackpot by getting her on board. I can't wait to see her getting started and leaving her mark in the professional game."