The new year is starting with a rush for Australian cricketer Alex Blackwell with her first-ever competitive matches against twin sister Kate in a much-anticipated Ashes series.

Alex and Kate, 30, are already the the first female twins to represent Australia in cricket, doing so across all three forms of the game between 2004 and 2008.

They played together with the hugely successful NSW Breakers side from 2002 to 2010 before Kate retired three years ago.

After playing soccer during the winter, Kate has revived her cricketing career this summer, playing for WA Fury in the national competition.

This week is a landmark one for the siblings, with their teams clashing on three successive days in a one-day game at Floreat Oval on Thursday and in T20 matches at the WACA on Friday and Saturday.

“We’ve never had a competition match against each other and doing it at this level in a national domestic competition is pretty interesting and we’re really excited about it,” Alex Blackwell told AAP.

“Its a a nice sort of event for us, where we might celebrate the careers we’ve had together as twins.”

Alex will then stay on in Perth, with the Ashes Test against England being played at the WACA from January 10.

The women’s Ashes will again be contested over all three formats as it was for the first time in England last year.

“I think this is one of the biggest series that we would have played,” Alex said.

“We’ve played World Cups and they are the pinnacle of our sport.

“But to play against an in-form English side and to try and win those Ashes back on home turf, and after the men have just won, we’re really excited.

“We haven’t played in such an important series for a little while, so we’re looking forward for it.”

Alex credited Kate with supporting her, but said there hadn’t been any change in the frequency of contact with her leading into this week’s matches, though they had spent Christmas apart for the first time.

She said their mum would find it difficult watching the games in Perth this week.

“She usually has the toughest time. She’s not the best of spectators,” Alex said.

“She always gets very nervous when either of us are batting, so she’s got a double dose and she won’t know who to cheer.”