Saint Onophrius by Master Darmsatdter circa 1460
Some of the saints went around naked - in summer and winter. They were usually termed 'Fools for Christ' and their nakedness was penitential, an expression of extreme humility - and of course, poverty.
Today is the feast of St. Onuphrius the Great, a desert father saint. He was quite hairy, and a bit more modest, since he also wore a loin cloth made of leaves. Some saints didn't, but I doubt they would be a temptation against chastity for anyone.
Onuphrius, Macarius, and Peter
Basil the Fool
Mary of Egypt
Francis of Assisi
Brother Juniper, who gave his tunic to a beggar.
'Nude Beach' - T. Nelson