Gwen Stefani looked worlds away from her recognisable platinum blonde locks in some sweet family photos with her brother Eric.The singer marked her big brother's birthday on Thursday with a trip down memory lane, posting two throwbacks of them.MORE: Gwen Stefani makes surprising revelation about childhoodOne black and white image saw Gwen as a toddler holding Eric's hand, and another appeared to be from a family portrait, with the siblings decked out in formal wear.WATCH: Gwen Stefani debuts new