Originally Posted by titiromi
I think she was present judging by the second picture on Instagram.
From the Princess Foundation website:
On Saturday 12 December 2020, the traditional Christmas Ball was held in the Salle Empire of the Hôtel de Paris under the high patronage of HSH Princess Charlene of Monaco and in the presence of Mr. Gareth Wittstock
, Secretary General of the Princess Foundation Charlene of Monaco.
Bal de Noël 2020 - Fondation Princesse Charlene de Monaco
So under the patronage of Princess Charlene but in the presence of Gareth Wittstock. If Charlene had been present the Foundation would have said so.