Meg Ryan - Plastic Surgery and Lip Implants?

I like Meg Ryan. Her roles in When Harry Met Sally and Sleepless in Seattle are classics. But what the heck has happened to her lips???
Her lips do appear to have undergone quite a few changes over the years. She started au naturel (1st photo), then her lips seemed to enlarge and her mouth widen (2nd photo), and fairly recently (3rd and 4th photos) it appears that things are going back towards normal (or nearly that). Here is my take (totally unsubstantiated opinion here):

She appears to have had lip implants placed, most evident in her upper lip. Back in the late 90's many plastic surgeons used Gore Tex implants to "permanently" enlarge the lips.

Ashley Tisdale Confirms Rhinoplasty

High School Musical's Ashley Tisdale has recently confirmed to People.com that she's had a nose job. According to the article, she stated:

"Growing up I always knew I had a deviated septum on the right side of my nose, which caused trouble breathing," a bandaged Tisdale told PEOPLE on Monday from her Los Angeles home. "The older I got, the worse it got. I went to get it checked out, and the doctor told me the septum was 80 percent deviated and that I had two small fractures on my nose." Tisdale's mother, Lisa, was by her side during the five-hour procedure.