US teen Gauff wins two Parma titles in one day
Third seed Gauff won through 6-1, 6-3 against Wang, the sixth seed, in 74 minutes to add to her hardcourt title in Linz in 2019.
Gauff, who is ranked 30 in the world and has won 20 of her last 26 matches, saved each of four break points in her first meeting with the 29-year-old Wang.
The Chinese player was looking for her third title and first outside China.
"It definitely means a lot, especially on clay, which is not really a surface I feel like people associate with me," said Gauff.
"I always liked clay, but I always fall on it, I always get dirty!"
"I have good results on it, so it's not about my performance. It's just that clay shows you a little extra love than the other surfaces do."
The Amercian pair defeated second seeds Darija Jurak and Andreja Klepac, 6-3, 6-2.
Sharapova completed the sweep 92 days after Gauff was born.