Photo SpecialLook Who's Fiftysomething!

MELANIE MAYRON

Played: Free-spirited photographer Melissa Steadman
Now: Mayron is a single mom to twins Miles and Olivia, 8, and is getting set to launch a diaper cream later this year.
Personal uplift: "I've still got my pregnancy weight from years ago, the final 20 lbs. I haven't lost! I had my breasts reduced and lifted last year. After the babies, they just ... needed it."

For more from the women of thirtysomething, including the secrets to a happy marriage and how it feels to grow older in Hollywood, check out the new issue of PEOPLE, on newsstands now