Victoria Beckham has wowed her fans with another luxurious outfit – and this time it's a glamorous eveningwear piece.The star took to her Instagram Stories to share her new dress with her fans, debating whether the lilac version or the pastel yellow shade was her favourite – and just like her, we can't possibly choose!MORE: Victoria Beckham's cheeky new jeans have husband David's seal of approval"Which colour do we like?" she asked in one Story, while in another she revealed the plunging gown