6ar6ie6 defeated Emily Brooke by unanimous decision on Saturday and moves on to the Kingpyn finals.
The victory, which happened at the 3Arena in Dublin, came moments after Brooke's sister, Elle, also fell in a semi-final bout.
The similarities between the sisters' fights were plentiful as both were smaller than their victorious opponents, and like her sibling Brooke attempted to negate the much taller 6ar6ie6's natural advantage with aggression and power.
However, the Australian TikTok star used her stature to fend off the younger Brooke sister and earn a spot in the final against Jully Poca.
Despite the victory, 6ar6ie6 seemed disappointed in her peformance, saying after the fight that she wants "to be better next time".
"It's a relief," she said on the broadcast. "I'm glad I lived up to your expectations."