meaning of 'her signature sartorial style'?

[ZaixinF]

Introduced by her daughter, Chelsea, who called her “my hero,” Mrs. Clinton was met with a lengthy, loud standing ovation. She sprinkled her opening remarks with personal touches, delighting the crowd by thanking “my supporters, my champions — my sisterhood of the traveling pantsuits,” a reference to her signature sartorial style.

question:meaning of 'her signature sartorial style'
thanks

 

[wazat]

It means "related to a tailored look."

American Heritage® Dictionary: Description of sartorial
ADJECTIVE: Of or relating to a tailor, tailoring, or tailored clothing: sartorial elegance. sartorially