Holland Bogan, Emily Coubrough and Poppy Mellanby will all link up with the group as day trainers to support their development, after impressing in the 2024/25 Celtic Challenge.
The trio helped Warriors to their first-ever victory over Edinburgh last Saturday, and will be looking to back up their result when Gwalia Lightning visit Scotstoun this Saturday.
Bogan was previously part of the Scotland squad ahead of last autumn's WXV2 warm-up Tests following a standout debut Celtic Challenge season, the Glasgow Warriors vice-captain having continued her impressive form in this season's campaign.
Back-rower Coubrough has been an ever-present for Lindsey Smith's side this season and is joined by Biggar club-mate Mellanby, who became the youngest-ever Glasgow Warrior - male or female - earlier in the campaign.