Today is the commemoration of this particular icon of Mary and Christ, signifying the Incarnation: the Icon of the Sign.

OCA: “The Icon of the Mother of God ‘Of the Sign’
depicts the Most Holy Theotokos with prayerfully uplifted hands,
and the Divine Infant is at Her bosom in a mandorla (or sphere).”

Icon Reader also has an article about this icon, “The Theotokos ‘of the Sign’ Icon.” There are many, many renditions of this form, and I especially love the one at my parish:

“Her prayerful stance also gives the impression of presenting us with Christ,
and our attention is drawn – as always with icons of the Theotokos –
to her Son, our Saviour.”