One is a high-profile socialiate known for her love of Karl Lagerfeld designs, the other, although the wealthy scion of a shipping family, prefers to keep out of the limelight.
No wonder then that Charlotte Casiraghi and Athina Onassis-Miranda that took different approaches to their outfits for a sophisticated gala in Valencia, Spain.
Charlotte, the daughter of Monaco's Princess Caroline, is the possessor of as perfect a figure as any of her European peers. She showed off her pins in a form-fitting blue mini, teamed with towering silver heels when the two young ladies attended the Global Champions ball for the world equestrian community.
As a wife and stepmother, Athina - who at 24 is just two years older than the Monegasque royal and naturally reticent in public - was more understated.
The heiress, who was accompanied by her dapperly suited husband, 36-year-old Alvaro 'Doda' De Miranda Neto - wore an A-line silk shift and patterned shawl over leggings. Completing the look were simple silver earrings and mid-height pumps.
Athina had a successful weekend at the amateur competition preceding the socialising: she placed third in the contest, which runs concurrently with the professional event.