Taking to the red carpet on the arm of her fiancé True Blood's Joe Manganiello, Sofia's sparkler made the perfect accessory for her beautiful one-shoulder gown.
All eyes were on the Modern Family star's left hand as she showcased the stunning diamond her other half had popped the question with.
As well as dazzling us with her new accessory, Sofia made sure to stun herself, teaming her gorgeous red dress with sleek and straight locks and a bold rouge pout to match.
And not to be outdone by his pretty wife-to-be, Joe made sure to look just as dapper, sporting a tailored two-piece suit and polka dot bowtie.
The couple walked arm-in-arm as they made their way into the awards ceremony, looking seriously loved-up as they stopped for photographers.
Cuddling up to each other, Joe wrapped his arms around his other half, and couldn't resist stealing a kiss from Sofia too!
The pair's appearance at the SAG awards comes after Joe and Sofia recently got engaged.
According to reports, the 38-year-old proposed to Sofia on Christmas day during a holiday to Hawaii.
While the couple hadn't confirmed the rumours, Sofia's new rock sitting pretty on her engagement finger certainly did last night.
The couple began dating last year in 2014.
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