Katherine Schwarzenegger definitely takes the #HorseGirlSummer vibe along with her, and it's delightful. The writer and lifestyle influencer accompanied sun-kissed vibes of her on a white horse with a whimsical caption declaring, "Let the #HorseGirlSummer begin now!" Full of energy, the image shows Schwarzeneegger grinning ear to ear, outfitted in helmet, sunglasses, and pink saddle [...]