Celine Dion delighted fans with a recent update on her new Las Vegas show - and she did it wearing the most amazing gown.The singer sizzled in a floor-length, strapless dress which plunged to her waistline in the post she shared on Instagram.MORE: Celine Dion makes surprising revelation about dating after tragic death of husband Celine announced that extra dates had already been added to her Resorts World Las Vegas residency because of high demand.She not only shared a poster picture but a