Tush Baby/Hipbelt Recommendations

Hello! I have been struggling with finding a hip belt that will fit me properly as a thin woman. I have a 24-inch waist, and most I have found only go to 27. I thought I could make that work and got the Cozy One off of Amazon and it always comes un-velcroed when I put my toddler on it. I love my Happy Baby carrier, but I ready wanted a hip belt so I can keep up with his constant up and down while I'm doing something