Of all the royals, Spain’s Queen Letizia might have the most attainable style. The 54-year-old often steps out in brands we know and love — Mango, Zara, H&M, Hugo Boss, etc. — so when we spotted her rocking trendy double-strap Mary Jane flats instead of pointy stilettos, we weren’t as shocked. In fact, we thought, “Wait, where can we get those?” The shoe style might be a favorite of the petite brunette, as she wore a burgundy pair on October 9, then swapped them for a chic black alternative on October 13. Although the brand hasn’t been confirmed, we’re assuming the shoe is Sézane’s Paula B...