Rose Byrne debuts her baby bump in her first red carpet appearance at a screening of Spotlight on Nov. 3. Credit: Alberto E. Rodriguez/Getty Images

Glowing! Pregnant Rose Byrne debuted her baby bump at a screening of Spotlight on Tuesday, Nov. 3, in her first red carpet appearance since Us Weekly confirmed that she was expecting on Oct. 22. 

The Neighbors actress, 36, who attended the screening with her brother George Byrne, wore a floral print maxi Ulyana Sergeenko dress, belted high to accommodate her growing belly, and cleverly posed for pictures with her jacket blocking the full view of the bump. 

Byrne, who's expecting her first child with her boyfriend of three years, Bobby Cannavale, looked radiant at the event and afterparty in minimal makeup with her thick hair in a relaxed blowout. 

The Australian native and Cannavale, 45, began dating in 2012, and starred in Annie and Adult Beginners together in 2014. The longtime couple keeps things hush-hush on their private relationship, but Cannavale gave Byrne a big shout-out during his 2013 Emmys speech. "And I want to thank the love of my life, Rose," he gushed at the time.

What do you think of Rose's pregnancy style? Tweet with @UsWeekly using the hashtag #stylebyUs!

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