Saturday's Play-Off, presented by Mercedes-Benz, at The Valley is set to be the highest-attended home fixture in Charlton Athletic Women's history.
After finishing third in WSL2, the Addicks face Leicester City, the WSL's bottom-placed team, in a one-off final for a place in next season's WSL.
This weekend's crowd will surpass the previous record of 3,710 set in 2003 when Charlton hosted Arsenal.
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