Singer-Taylor-Muhl-Is-Diagnosed-With-039Chimerism039-a-Rare-Condition-In-Which-Twins-Are-Fused-Into-One-Person-In-the-Womb Posted on March 7, 2018 Singer Taylor Muhl Is Diagnosed With 'Chimerism,' a Rare Condition In Which Twins Are Fused Into One Person In the Womb 750 × 400