The versatile player joined Blues in July 2019 from Nashville Rhythm in the Women’s Premier Soccer League.
Holloway recently made her 50th appearance for Blues and has been a stalwart at left-back since moving into the role under Carla Ward.
The Northern Ireland international previously played for Clevedon Town and has experience in the English top-flight, formerly plying her trade at Bristol City Academy.
The 26-year-old scored her first senior international goal against North Macedonia in an 11-0 win in World Cup qualifying and added two more to her international tally four days later against the same side.
Holloway can play in a number of positions, including full-back and winger.