Small bum; poop leaks

My daughter has grown enough to finally be able to wear cloth diapers! She takes after her dad with teeny tiny hips, a small bum, and slender legs (unlike my side of the family...) so, while the cloth diapers soak up her pee well, when she poops... we have leaks. Like... full-on shooting out the side leaks D:

She only poops once or twice a day, but I would still like to avoid poop leaks if possible. Are there any tips I could be missing? She's on the smallest size possible with the poppers.

(Btw, I'm in India, so they're not the same brands as in the states. Ours are; bumberry, babyhug, chuddie buddy. However, they look identical to US brands)