As “Today” fans prepare to say goodbye to Hoda Kotb, Jenna Bush Hager is sharing who will replace her co-host and friend during the fourth hour of “Today.”

"The fact that she's coming to give us a week of her time — she could be doing anything — is a testament to the show that we have built," Bush Hager exclusively tells PEOPLE

After Kotb departs her longtime role as co-host of 'Today' this week, Bush Hager will be joined by various celebrities.