Transcript for Jane Fonda the Cover Girl for L'Oreal at 75
Linzie janis takes us behind the scenes of the latest campaign. Reporter: She's the scene-stealing beauty in this l'oreal makeup ad. We're worth it. Reporter: That's right, 75-year-old jane fonda is winning rave reviews for the brand's new collection. A combine that brings together ambassadors of all ages. 38-year-old eva longoria. And 52-year-old julianne moore. In this shoot, fonda says it was a special day. I laughed so hard, I was crying. We couldn't look at each other because we were laughing so hard. Without a doubt, confidence grows with age. Reporter: The actress became l'oreal's oldest spokeswoman at the age of 68. Part of a growing trend of major beauty campaigns featuring women over 40. In this little jar -- Reporter: Diane keaton, 67. Jennifer aniston, 44. Naturally beautiful. Reporter: And ellen DeGENERES, 55. Easy, breezy, beautiful, cover girl. Reporter: Powerful, beautiful women. Proving that age really is just a number. We're worth it. Jane fonda can pull that off. "People" editor, larry hackett joining us. It makes great business sense. The idea behind cosmetics is this will make you look like this. If you're 75 years old, the implied message is, it works. And millions of women who are that age that do use these products. It makes sense. And people have grown up with jane fonda looks terrific. 75 is like the new 25. She's great on "the newsroom." She is. It's a great spot. A very young 64, is diana
This transcript has been automatically generated and may not be 100% accurate.