Jennifer Lopez looks dazzling during Tonight Show appearance

Jennifer Lopez always looks terrific, and it was no exception when she made an appearance on Jay Leno's Tonight Show. She donned a beautiful black velvet halter dress, which she paired with some high Christian Louboutins.

Not to mention, her fashion jewelry was quite exquisite. The American Idol judge matched her dress with tons of diamonds in the forms of a long necklace, earrings, bracelet and ring. The jewels were from Norman Silverman, Diamond in the Rough, Carrera y Carrera and Hellmuth, according to People Magazine.

The Daily Mail reports that Lopez talked about everything from her split with Marc Anthony to their twins, Max and Emme, who she has a little nickname for.

"The twins are so good, they're about to turn four," Lopez said on the show. "They're my coconuts, that comes from when they were little and in their cribs and started growing hair, it looked just like a coconut to me, they both look like coconuts."

The 42-year-old star also talked about her new boyfriend 24-year-old Casper Smart.