floral cotton skater dress

Like new!! Says size 6 but I am a size 2/4 and it fits perfectly. Low v-cut back (see photo). I feel like I’m too old to wear this. Is 31 old? I’m not married and I don’t have kids yet. I’m still renting with no intentions of buying a house any time soon. I need a roommate but have no friends. Beautiful colors and a dreamy floral pattern