As first seen on blog "Stripes 'n' Vibes" here: Valentines in Stripe Dress & Check Scarf.
She is wearing tights similar here: Super Opaque Tights
Always a favorite, these Italian-made tights are soft and superstretchy (so they won't bag out at the knees).
Junya Watanabe Pink Block-colour Tights
Express Swiss Dot Full Tights
Boohoo Mini Heart Tights