"It really bums me out that I can't afford the trendy stuff that I see on TV, and everything that my friends are wearing because it's too expensive," says Katie, a high school senior who works after school. "I dread going back-to-school shopping because a lot of times the stuff I want, the prices are way too high," she explains. "I do sometimes feel embarrassed that I'm wearing the same stuff as last year because everybody else has new clothes."

Rachael surprises Katie by sending The Hills' fashionista Whitney Port to show her how to get trendy looks for less. First, Whitney suggests that they need to focus on the items she really needs. "When you're trying to shop on a budget, you have to really think about what your closet is missing," she explains, suggesting that every woman needs a good pair of jeans, a black dress and a white tank. "Not everything has to be a designer label, you can find things anywhere," says Whitney, who takes Katie to stores like H&M and Forever 21.

Click on the video above to check out Katie's new look, and view the slideshow on the right to see Whitney's other suggestions.