Kourtney Kardashian and baby Reign joins Khloe at LAX while dressing baby in Penelope's hand-me-down sneakers

<!-- rectangle --> Her sister Kim Kardashian splurges thousands on designer outfits for daughter North. But Kourtney Kardashian proved herself to be the canny one in the family on Sunday, as she dressed baby son Reign in his big sister Penelope's hand-me-downs. The nine-month-old wore a pair of three-year-old Penelope's old animal-print sneakers as he joined his mother and auntie