Perry is out of action with an AC joint injury suffered during Sunday’s last ball loss to the Melbourne Renegades.
Armitage, who has been playing club cricket in Hobart, was recommended to the Sixers by superstar wicketkeeper Alyssa Healy after the pair played together for the Yorkshire Diamonds in the UK’s Kia Super League earlier this year.
A powerful top order batter and occasional leg spinner, Armitage, 22, was out for dinner with her club teammates when she received a message from Healy, enquiring about her availability to step in for the Sixers.
Armitage has yet to play in the WBBL but said she was well aware of the Sixers and their imposing record in the world’s premier domestic women’s cricket competition.
“Obviously I’ve seen bits and bobs from watching at home so it’s pretty cool that I’m now getting the opportunity to come into this side and play a little bit,” Armitage said.
“I don’t know what my role in the team will be at the minute but if I get the chance to bat at the top of the order I’ll hopefully be able to strike some big balls with Midge (Healy) and contribute as much to winning performances as I possibly can for the amount of time I’m going to be here.”
Armitage’s first game in magenta will be on Wednesday at North Sydney Oval when the Sixers take on the Hobart Hurricanes.