The Young Press Secretary Isn't The First Woman To Change Her Looks Drastically Karoline Leavitt's change in appearance ... hair as the Slovenian-born former model and first lady.

By intense observation and mathematical calculation, Leavitt realized that with cepheid variable stars (which change brightness with great regularity), there is a direct correlation between a star ...

During her career, Leavitt discovered more than 2,400 variable stars, about half of the known total in her day. These stars change from bright to dim and back fairly regularly. Leavitt's work with ...

White House press secretary Karoline Leavitt on FOX News weighed in on the leftist revolt against Elon Musk and attacks on lots where Tesla cars are stored. JOHN ROBERTS, FOX NEWS: I want to ask you ...