The two have been pitched against each other after Freida, 26, featured in the cosmetic firm's 'Happy New Year' television commercial with the brand's other global ambassadors -- but not Aishwarya.
'I don't know anything about it. We need to check out the details,' the Daily Mail quoted a spokesperson for Aishwarya as saying.
'Ash is busy with her upcoming performance at an awards function, so she can't speak on this issue right away,' the spokesperson added.
The model-turned-actress has been representing the brand since 2005, while Pinto joined in 2009.
Spotted: Aishwarya Rai Bachchan in France
Review: Freida Pinto charms a tall dark stranger
Of Freida Pinto's legs, movies & Dev Patel
What Freida Pinto is getting desperate for
'Nobody recognized me in Mumbai slums'