Chantelle Houghton puts on brave face after Rav split as she launches boutique... but she can't raise a smile for photographers

By Sarah BullSubdued: Chantelle Houghton can't raise a smile as she launches her new clothing boutique in Buckhurst Hill, EssexShe arrived in a horse-drawn carriage wearing a stunning plunging black dress which showed ex-boyfriend Rav Wilding exactly what he's missing.But newly-single Chantelle Houghton failed to raise a smile for photographers as she posed at the launch of her very own boutique,