Celebrity Reese Witherspoon Goes Cowgirl in Her Latest 'Gram with Adorable Son Tennessee By Rita Kokshanian Rita Kokshanian Rita Kokshanian is a Los Angeles-based writer and editor who covers celebrity, fashion, beauty, and lifestyle. She was previously an Assistant Editor for InStyle and is currently the Senior Copywriter at The Grind. InStyle's editorial guidelines Updated on October 5, 2015 @ 03:30PM Pin Share Tweet Email Photo: JB Lacroix/WireImage While we love a good mother-daughter shot of Reese Witherspoon and her look-alike daughter Ava Phillippe, it's the photos with her youngest child, Tennessee, that really tug at our heart strings. The actress hasn't been shy about sharing photos of herself and her little boy in the past, but the one she posted today may be the cutest yet. "Just us outlaws makin' our mark in #SantaFe....#OnceUponATimeInTheWest #JohnWayneInTraining #NewMexico," the mom captioned a photo of herself dressed in jeans, a plaid-button up, cowboy boots, and a western-inspired hat holding hands with her little man, who looks more than happy to be snapping a picture with mom. Just last week, Witherspoon shared a sweet message to 3-year-old Tennessee on his birthday. Here's to hoping we'll see more of these adorable mother-son photos in the very near future. The 15 Cutest Photos of Reese Witherspoon and Her Look-Alike Kids