The 22-year-old finally picked up her first trophy in four years with a straight sets triumph over the Belgian runner-up.
Cornet, ranked 73rd, was seeded seventh but pulled off the all-elusive championship win over her second-seeded opponent in a tie-break second set after edging the first over 12 games.
The French player had led 5-3 in set number two, but was unable to serve out the match only to come to life in a dominant tie-break performance.
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