Jenna Bush Hager and Hoda Kotb have a close working relationship on the fourth hour of Today, and it sounds like a lot of fun off-air too!MORE: Jenna Bush Hager and Barbara Bush talk the power of sisterhoodJenna, who has just written her latest children's book, The Superpower Sisterhood, with her twin sister Barbara Bush, opened up about working with her co-stars while chatting to HELLO!The mom-of-three revealed that she often gets in fits of giggles with Hoda, and it's often made all the more funnier as it's never when they're supposed to be laughing.VIDEO: Jenna Bush Hager praises mom Laura Bush with moving story "I feel like Hoda and I laugh hysterically, we can get get into that laughter where we're not supposed to laugh.MORE: Hoda Kotb supports Jenna Bush Hager during proud momentMORE: Hoda Kotb's stand-in host revealed as star takes time off TodayThat church laughter where we're like 'We're going to get into trouble'," she shared. Sheinelle Jones on the other hand, has a lot of fun at Jenna's expense, according to the talented author.