History buff Garrett wants the Stars and Stripes to spruce up his bedroom. So friends Sammy and Jessie elect designer Jordin and carpenter Barte to help give Garrett's room some capital style. Garrett's new "American History" room is filled with bright patriotic colors, a beautiful wall of historic quotes, storage shelves in the shape of the Washington Monument and a bed that resembles the Capitol building, with faux marble steps that double as dressers. He even has his very own "Vote for Garrett" campaign buttons and a cool fireworks display.

Meanwhile, tennis-loving twins, Jessie and Sammy, are hoping the boys can serve up an ace and turn their playroom from lame and tame to totally tennis. So friends Garrett and Gannon double up with designer Scott and carpenter Ginene to give the girls' old playroom a grand-slam finish. Jessie and Sammy's "Ultimate Tennis Lounge" is a hip new hangout to share with their friends. The playroom now features a juice bar, a cool tennis-ball floor, grand-slam tournament storage shelves, bleachers that fold down into beds, and a huge line judge chair that doubles as an entertainment center for thei new TV.

Plus, don't miss both teams battling it out in the extreme — and extremely goopy — Boys vs. Girls Challenges! Find out who wins the Labor Savers, and who decides to give them up in exchange for a cryptic clue about their room.