Watching Kristen Bell Surprise Her Sister With a Home Makeover Is Guaranteed to Make You Smile

If you didn't already love Kristen Bell from her roles in movies like Frozen and Bad Moms, you're guaranteed to be a fan after you see this adorable episode of My Houzz, in which the actress surprises her big sis with an epic home makeover.

Kristen's sister Sara and her husband, Tom, have been living in a three-bedroom, one-bathroom home in Detroit for the last 12 years. During that time they've had four kids, and the family is now bursting from the seams of the modest home. While the main living quarters are tight, the basement boasts 1,026 square feet of space with untapped potential — so Kristen decided to collude with Tom and interior designer Melissa Kennedy of Meadowlark Design+Build to transform the basement into a haven for the kids, complete with a media and game area, extra bedroom, and a much-needed second bath.

The look on Sara's face as she explore the stunning basement is absolutely priceless. Check out the 20-minute video from Houzz above – it will remind you of an episode of your favorite home renovation reality show – and then use all the great design ideas in it to start planning your own basement makeover.