Supermodel Christie Brinkley has not closed the door on love, but the ageless beauty is not sure there is a suitable person open for her. Brinkley recently admitted that while she "remains open" to a relationship, she is unsure about the dating pool. "There just doesn't seem to be anybody out there," she lamented to People magazine. Brinkley has been married four times, famously to singer Billy Joel and most recently to architect Peter Cook.