As first seen on blog "1000 maneras de vestir" here: Pilgrim
She is wearing tights similar here: Navy 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