TEXAS: Jessica Simpson has reached her target weight . The reality star and mother to daughter Maxwell, 21 months, and son Ace, eight months, has shed 50lbs of her baby weight and celebrated by posting shots of herself in a white dress on Instagram. Under one picture she wrote: ''First time rocking a white dress this year but not the last. Alongside another picture of her wearing a T-shirt, she added: ''and a white T-shirt ''. Jessica who is engaged to be married to Eric Johnson also posted a picture of Maxwell, showing how she has inherited her famous blonde hair colour.–ES