Last night, Aditi Rao Hydari, playing Bibbojaan in Sanjay Leela Bhansali's ''Heeramandi,'' attended the Mumbai screening with fiance Siddharth. Aditi donned festive attire, and Siddharth wore a bandhgala. The couple posed happily on the red carpet. Their engagement announcement last month adds to the excitement surrounding Aditi's upcoming project.