AceShowbiz - Mandy Moore is about to expand her own version of the "Big Three" in real life, and it's making fans everywhere emotional. The actress, widely cherished for her role as Rebecca Pearson in NBC's hit series "This Is Us," recently shared the heartwarming announcement of her third pregnancy in an unmistakably sweet way.

Drawing inspiration from the show that captured our hearts for six seasons, Moore took to Instagram to reveal that she and her husband, Taylor Goldsmith, are expecting a baby girl.

"Sometimes life imitates art. The third in our own Big Three coming soon. Can't wait for these boys to have a baby sister. [love emojis]," wrote Moore, accompanying a photo of her two sons sporting shirts labeled "middle" and "big."

The reference to "This Is Us" and its iconic "Big Three" resonated deeply with fans. In the show, the Big Three siblings - Kevin, Kate, and Randall, played by Justin Hartley, Chrissy Metz, and Sterling K. Brown, respectively - formed the core around which the complex narrative of family, love, and struggles revolved. Mandy's real-life announcement mirrors the touching familial themes of the series.

The actress's announcement was met with an outpouring of love from her screen family and friends. Chrissy Metz, who played her on-screen daughter Kate Pearson, joyfully commented, "Mannnnndyyyyyy!!! Awwwwwwwwwwwwww!!!! Congratulations!!! [love emoji]."

Ryan Michelle Bathe, married to Sterling K. Brown, added her warm wishes, saying, "This is amazing news and congratulations!"

Mandy Moore has always shared a special bond with her co-stars from "This Is Us," a connection that continues even after the series concluded two years ago. Alongside Sterling K. Brown and Chris Sullivan, Moore recently launched a re-watch podcast titled "That Was Us," underscoring their enduring camaraderie.

As of now, Moore's eldest son is three and her youngest son is one, making her upcoming baby girl just a touch younger than her brothers. It's easy to imagine the trio sharing many adventures, fostering relationships much like the beloved characters of "This Is Us."

With the touching announcement, Moore has once again brought fans into her world, blending her real-life joys with the emotional tapestry of the show. Each heartfelt note of congratulations from her celebrity followers - celebrities Jamie Chung, Monica Lewinsky, Minka Kelly, Michelle Monaghan, and others - makes it evident that Mandy Moore's growing family is surrounded by love and support.

For those who wish to revisit the emotional depth of "This Is Us," the series is available for streaming on both Netflix and Hulu. As we eagerly await more news about Mandy's journey, one thing is clear: art truly does imitate life in the most beautiful ways.