The presence of columns supporting votive sculptures in Ancient Greek temples is well attested since at least the Greek Archaic period. The Christian adaptation is the Marian column, attested from at least the 10th century (in Clermont-Ferrand in France). The image of Our Lady of the Pillar in Zaragoza dates to the 15th century.
The column itself is below the conical red “skirt”.
The celestial glory on her apex and the conical support are recurrent shapes around the world: