Introduction: Immediate small breast reconstruction poses challenges including limited potential donor site tissues, a thinner skin envelope, and limited implant choice. Few patients are suitable for autologous reconstruction while contralateral symmetrization surgery that often offsets the problem of obvious asymmetry in thin and small-breasted patients is often unavailable, too expensive, or declined by the patient. Methods: We reviewed 42 consecutive patients with mastectomy weights of 350 g or less (the lowest quartile of all reconstructions). Indications for the mastectomy, body mass index, bra cup size, comorbidity, reconstruction type, and complications were recorded. Results: A total of 59 immediate reconstructions, including 25 latissimus dorsi flaps, 23 implant-only reconstructions, 9 abdominal flaps, and 2 gluteal flaps, were performed in 42 patients. Of the 42 mastectomies, 4 were prophylactic. Forty-three percent of patients had immediate contralateral balancing surgery. The average mastectomy weight was 231 g (range, 74-350 g). Seven percent of implant-based reconstructions developed capsular contracture requiring further surgery. One free transverse rectus abdominus myocutaneous flap failed because of fulminant methicillin resistant staphylococcus aureus septicaemia. Discussion and Conclusion: Balancing contralateral surgery is key in achieving excellent symmetry in reconstruction small-breasted patients. However, many patients wish to avoid contralateral surgery, thus restricting a surgeon's reconstructive options. Autologous flaps, traditionally, had not been considered in thinner women because of inadequacy of donor site tissue, but in fact, often, as with larger-breasted patients, produce superior cosmetic results. We propose a simple algorithm for the reconstruction of small-breasted women (without resorting to super-complex microsurgery), which is designed to tailor the choice of reconstructive technique to the requirements of the individual patient.