With only one week remaining before the June 8th one-night-only concert presentation of Bombshell, rehearsals are in full swing!

The dancers have been working on the big numbers with choreographer Josh Bergasse since last week, but Katharine McPhee and Megan Hilty have officially joined in on the fun as of today!

Katharine took to Instagram to share some photos and videos from rehearsals. Check out a sneak peek of Kat and company doing a run-through of the high-energy “Public Relations” number below!

Get more of a glimpse of the behind-the-scenes action via the following Instagram photos!