It's just Luvable!
Font Family: Fontdinerdotcom Luvable
Tags: 1960, beatnik, birthday, bouncy, capital sharp s, celebration, charming, comedy, comic, condensed, contrast, cool, cute, didone, display, fifties, friendly, fun, funny, girly, greeting, hand lettering, hearts, hip, hippie, invitation, jazz, kids, lively, logo, love, lovely, mid century, narrow, nice, playful, poster, random, retro, serif, versal eszett, warm