Model Karlie Kloss engaged to Joshua Kushner, will be Ivanka Trump's sister-in-law

Kloss just announced her engagement to Joshua Kushner, the brother of Jared.

The model and her longtime boyfriend, Joshua Kushner, announced their engagement on Tuesday in separate social media posts.

"I love you more than I have words to express. Josh, you’re my best friend and my soulmate. I can’t wait for forever together. Yes a million times over," Kloss wrote on Instagram, along with an emoji of a diamond ring.

Kusher shared a photo of Kloss on the social media platform and added the caption, "fiancé."

Kloss, 25, and Kushner, 33, have been dating since 2012 and for the most part, have kept their relationship private. They've also not publicly commented on Jared Kushner's involvement with the White House.

However, in 2016, a spokesman for Joshua Kushner told Esquire magazine that he is a lifelong Democrat and did not plan to vote for Donald Trump. Similarly, Kloss tweeted "#ImWithHer" on election day.

A representative for Kloss did not immediately respond to a request for comment from "Good Morning America."