I love buying swimsuits for some reason. When my kids were younger, I usually got the swimsuits from Target, Old Navy, or Gap. Amazon is what I use for my son and daughter currently. In addition for my daughter I like Athleta and Granite Hill for quality. I don’t have any Granite Hill swimsuits listed below because their sizes seemed pretty well picked over already.

(these are sold out) black tie dye bottoms, black tie dye top, pink flower bottom, pink flower top, green swimsuit coverup, palm tree swimsuit, top, shorts, shoes

bottom right (this link is still good)

bottom left, bottom right, purple coverup (these are sold out)
bottom right (this link is still good)