Losing weight is hard enough to do on your own—imagine having to battle the bulge in front of millions of people. That's what Valerie Bertinelli signed up for when she became the spokesperson for Jenny Craig in March 2007.

When Valerie began her weight loss journey, she weighed 172 pounds. A little over two years—and 47 pounds—later, the scale reads 125. "I lost the first 40 in the first year," she says.

• Read an excerpt from Losing It by Valerie Bertinelli
• Star Jones opens up about her gastric bypass surgery
• Marie Osmond on her public weight loss

From The Oprah Winfrey Show Losing Weight in the Public Eye with Star Jones, Valerie Bertinelli and Marie Osmond