“Happy birthday to the amazing Jena Irene !:)” Caleb, 23, wrote on Instagram, with a shot of the two performing on the 2014 American Idol tour.
Jena, who turned 18 today, showed off just what the crew did for her behind-the-scenes.
“Lol this is what I woke up to! Awesome decorations of sugar skulls and swearing! Should be a great day,” she tweeted.
Psst, in case you missed it, check out the first video in Caleb‘s “The Journey Begins” series below!
Caleb Johnson: “The Journey Begins: Part 1″