O'Neill's photographs offer a multifaceted portrayal of Hepburn, showcasing her versatility as an actress and her genuine warmth as a person. One of the most memorable images is of Hepburn on the set of "Breakfast at Tiffany's," where she embodies the iconic role of Holly Golightly with unparalleled grace and poise. O'Neill's lens captures Hepburn's enigmatic charm as she gazes wistfully into the distance, clad in the now-famous black dress and pearls.

In another striking photograph, Hepburn is seen in a moment of quiet reflection, her expressive eyes conveying a depth of emotion that belies her glamorous exterior. O'Neill's ability to capture Hepburn's vulnerability and humanity adds a layer of complexity to her public image, reminding viewers that behind the dazzling facade lies a woman of depth and substance.

Throughout his career, O'Neill had the privilege of photographing Hepburn both on and off the set, resulting in a collection of images that offer a rare glimpse into the private world of a Hollywood legend. Whether lounging at home with her beloved pet or enjoying a quiet moment of solitude, Hepburn exudes a natural elegance and grace that is impossible to replicate.