Ashlee Simpson is Engaged to Evan Ross!

More wedding bells for the Simpson sisters! Ashlee is engaged to actor Evan Ross (son of the legendary Diana Ross). The singer shared the happy news on Twitter this evening — "My baby love and I are ENGAGED!!! Hallelujah Hawaii!!!!!"— along with a photo of her new ring:

Ross worked with famed Los Angeles jewelry designer Neil Lane to create the one-of-a-kind ring, which stemmed from a piece in Lane's vintage archival collection. The original ring featured a marquise-cut diamond surrounded by small rubies. The pair worked together to add a modern twist, consulting with the bride-to-be's mother, Tina Simpson, to make sure Ashlee would love it. The updated ring features a diamond sleeve around the rubies, giving the new five-carat ring a total of 140 white diamonds accented with more rubies, set in platinum and gold. “Evan was really, really sweet, and he was looking for something beautiful, a unique ring that said everything: love, romance, beauty, character. He didn’t want anything traditional," Lane told People. "His taste level is exquisite, and he wanted to make sure it was a perfect ring for his love.”

The pair was first spotted together in July. At the premiere of The Hunger Games: Catching Fire (Ross will play Messalla in Mockingjay) in November, the groom-to-be hinted at a pending engagement, telling omg! Insider that "she's the one" and that wedding bells were "for sure" in their future.

Congratulations to the happy couple!

—Kristen Klein