Petite Plume Pajama Short Set in Bateau size 6

Petite Plume kid’s twill pajama short set in bateau purchased last year. One button was coming off and I sewed it back on with pink thread (see photo). Can easily sew button back with white thread. Purchased last year from Petite Plume website. Unfortunately my son grew out of this way too quickly. Comes from a pet and smoke free home.