Riley Mandel's boyfriend Cameron Ehrlich popped the question on Saturday, the pair and her father announced on social media.
"February 27, 2016 is the best day of my life," Riley wrote on Instagram. "I'M ENGAGED TO THE LOVE OF MY LIFE @cameronehrlich."
Alongside the excited message, Riley shared a happy selfie with Ehrlich, a senior iOS developer at Cie Digital Labs. In the image, Riley showed off her new engagement ring and pretty pink manicure.
Ehrlich, who proposed in Ghirardelli Square in the Fisherman's Wharf area of San Francisco, also shared the big news on social media, posting a close up of the ring with the caption, "Future Mrs Ehrlich!!!!!"
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Howie, 60, was beaming as he announced the impending nuptials on Instagram.
"I'm smiling because my baby girl just got ENGAGED! #HappyFace," the star wrote alongside a happy selfie.
Madel's other daughter Jackelyn got married in 2013. His oldest child, son Alex, officiated the ceremony.