Pop star Jessica Simpson has laughed off reports she is in the process of adopting an orphan, insisting she's not ready to undertake such a big responsibility. During her three-year marriage to Nick Lachey, Simpson often spoke of her desire to adopt a child and recently reiterated her dream of being a mother. In recent weeks, it was reported Simpson had been visiting a Mexican orphanage to choose a prospective son or daughter. However, Simpson says, "I'm not adopting a child! No, not yet. But that's not a silly matter. "I support an orphanage in Mexico and I've supported it ever since I was 13 years old. That's where all those rumours came from, but I'm making a trip pretty soon actually."