Is the Oura Ring too plain, and the Galaxy Ring too subtle? How about a smart ring with gems embedded into it? That's what ...

Jennifer Lopez is glowing in London, plus Ariana Grande, Martha Stewart, Spike Lee, Demi Moore and more. From Hollywood to New York and everywhere in between, see what your favorite stars are up to.

Nine maisons - three of which are new to the event - are to present their latest timepieces from Jan. 21 to 24.