After RG20 and RG22 she's just grabbed her 3rd trophy in New York.
It makes her perfect score 3/3 100% in the Slam finals.
At the age 21 (born in May 2001) Iga's timeline looks as follows
Assuming no injuries there will be 34 GS attempts more (9 AO, 9 RG, 8 WIM, 8 USO) before her 30th birthday...