Star Trek celebrity guest Teri Hatcher playing Transporter Chief Lt. Bronwyn Gail Robinson on The Next Generation episode The Outrageous Okona.
The top picture is the actor in normal circumstances, and the bottom picture(s) is of the actor in their specific role(s).
Most well known as Lois Lane in The New Adventures of Superman, but has also made her mark on Desperate Housewives as Susan Mayer. She also acted in Spy Kids, Tomorrow Never Dies, 2 Days in the Valley, Soapdish, Tango & Cash, in The Love Boat as Amy the Mermaid from 1985 to 1986, Frasier, Seinfeld and even MacGyver.
The Outrageous Okona -Star Trek: The Next Generation - 130 (episode # 2.4) -Playing Transporter Chief Lt. Bronwyn Gail Robinson -Transporter operator aboard the Enterprise-D. She met Captain Thadiun Okona when he beamed aboard. Then two other ships show up, and Okona is accused of getting ones daughter, pregnant; and stealing the other one's prized Jewel.