Vesicovaginal reflux (VVR) is a dysfunction of voiding, generally seen in prepubertal females. It results in distension of the vagina due to accumulation of urine, which can be easily confused with hydrocolpos on sonography. Although VVR is rarely reported in clinical practice, it needs to be differentiated from obstructive causes of hydrocolpos to choose the correct treatment option. We report a rare case of transient vesicovaginal reflux in a 13-years-old girl who had presented with vague complaints of urinary incontinence intermittently. Probable clinical diagnosis was hydrocolpos and VVR was diagnosed accurately by radiological examinations. Appropriate history-taking and timely imaging by an expert radiologist will help in accurate diagnosis and initiate an appropriate treatment option.