The Girl of Fire and Thorns (Greenwillow Books, 2011) by Rae Carson is a wonderful YA fantasy. I just discovered book one of this trilogy and raced through it.
Sixteen-year-old Elisa has been chosen to be the Godstone bearer. But as the younger princess, the princess who keeps getting bigger and bigger because she eats when she’s upset, she doesn’t see how she can ever be used. Married off to a neighboring king, at risk from the enemy, Elisa goes on a journey that changes her and her whole world.
Loved this book and am looking forward to reading book two, The Crown of Embers (2012) and following it up with The Bitter Kingdom (2013). Why didn’t I hear about this New York Times bestselling trilogy earlier?!
This was Rae Carson’s debut novel and was a William C. Morris Award Finalist. The trilogy has been translated into other languages. See covers here. She’s also written other stories in the universe, The Girl of Fire and Thorns Stories (Girl of Fire and Thorns Novella). 
Like a River Glorious, book one in the Gold Seer Trilogy, came out in September 2015 and is a YALSA 2016 Best Fiction for Young Adults pick. More to add to my TBR pile. 😉