JoJo Siwa is a Tall Girl (or Rather a Woman)

JoJo Siwa little big girl. Little because she pretends to be - it's her gimmick, like as wrestlers have in the WWE. Big, because she is - a big, strong, healthy as a horse girl - soon to be a woman. Some people may dislike her because of her gimmick, but really, it is nothing new. Nearly everyone does it now to differentiate themselves from the crowd (at least the smart ones). The Undertaker did it all his life, The rock did it, Brock Lesnar does it, now the YouTubers are starting to do it as well, and JoJo Siwa is a pioneer in the field.

About JoJo Siwa's Height

JoJo Siwa is a big girl, she claims to be five feet nine inches tall, and what is more, she looks only a little shorter than that - unlike some other Youtubers (like Jake Paul).

The real height of JoJo Siwa is 

5'8" (173 cm)

JoJo Siwa with Liza Koshy (5'1"), James Charles (5'8.5"), David Dobrik (5'9"), Shane (5'10") and Jeffree Star (5'11")
JoJo Siwa with Liza Koshy (5'1"), James Charles (5'8.5"), David Dobrik (5'9"), Shane (5'10.5") and Jeffree Star (5'11")

Here is the average human height around the world for comparison.

Average human height around the world