Because hot damn.
Galadriel
The Lady of Lothlórien, Galadriel was wise, fair, and perceptive. Fortunately for the Lady of Light, she's an Elf, so she hasn't aged at all.
New Line Cinemas / Via img2.wikia.nocookie.net, i.imgur.com
Legolas
After establishing his reputation as the hottest thing in Middle-earth, Legolas built himself a ship and took Gimli over the sea where they reside in eternal youth, looking fine.
New Line Cinemas / Via forevergeek.com, vignette2.wikia.nocookie.net
Thranduil
King Thranduil, Legolas' father and the most fabulous of Elves, is not someone to mess with. Last seen gracing Bilbo's journey with his Elven cheekbones.
New Line Cinemas / Via i.ytimg.com, img3.wikia.nocookie.net
Haldir
Initially the guardian of Lothlórien, Haldir later roadtripped to Rohan to aid in the filming of the Battle of Helm's Deep. He had to fake a death for dramatic purposes, but is spending his free time eating pizza and ambrosia in the Undying Lands.
New Line Cinemas / Via arwen-undomiel.com, img3.wikia.nocookie.net
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Here's What The Elves Of Middle-Earth Look Like Now