Jenny Boyd, younger sister of Pattie Boyd and former wife of Fleetwood Mac drummer Mick Fleetwood, is profiled as one of the defining "muses" of the Swinging London era, a role that placed her at the centre of some of the most celebrated music scenes of the 1960s and 70s. Drawn into that world through her sister's relationship with George Harrison, Jenny built her own path through modelling, songwriting influence and personal ties to major musicians, illustrating how closely intertwined the Beatles' circle was with the wider counterculture movement of the time.

The article traces Jenny's journey from London modelling work to San Francisco's Haight-Ashbury district in 1966, where she witnessed the early flowering of hippie culture before it soured by the time she brought Pattie and George Harrison there in 1967. She also travelled to India in 1968 with the Beatles to study under the Maharishi, inspired Donovan's song "Jennifer Jupiter", and later married Mick Fleetwood in 1970, contributing uncredited lyrics to Fleetwood Mac songs such as "Jewel Eyed Judy" and "Purple Dancer" during her time within the band's inner circle.