But the significant age difference didn't seem to be a big deal as the trio were seen enjoying the Coachella Music Festival in Indio, California together even walking hand-in-hand from the main stages.
The 40-year-old singer was no chaperone though when she accompanied the 19-year-old and 18-year-old BFFs who were later joined by Kendall's little sister Kylie, 18, who later appeared in Fergie's Instagram photo.
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