Swaroopanand said Swaraj chose to wear outfits that catered to Iranian sensibilities but neglected India's tradition.
"Swaraj wrote outfits in Iran which followed the Iranian tradition and went against our own traditions. She thus delivered a blow to India's prestige abroad," he said.
He compared Swaraj with former Prime Minister Indira Gandhi, who always wore clothes that reflected her "Indianness" during foreign visits.
"Unlike her, Indira Gandhi on her foreign visits took great care to ensure that her Indianness reflects in her clothes and conduct," the Shankaracharya said.