Cameron Diaz and husband Benji Madden were met with pregnancy rumors upon arriving in Los Angeles from Australia on Monday.

Is Cameron Diaz pregnant? Look at her trying to cover her belly, as rumors swirl: http://t.co/8zY42Axadq pic.twitter.com/B7qjzKVpdT

— HollywoodLife (@HollywoodLife) September 1, 2015

According to a report by ET, the rumors started when some keen observers noticed how the actress was covering her belly and drinking only water during her trip to Australia to support Madden and his brother at The Voice Australia finale. Despite the long and tiring journey from Australia to LA, the actress still looked composed. Upon arriving at the airport, Diaz was spotted wearing loose fitting attire. Although the actress is known to love casual style, some onlookers are suspicious at the way Diaz was wearing her bag and how her loose white shirt was tied.  She had a denim shirt wrapped around her waist too.

Is Cameron Diaz pregnant? She covers her stomach and.. http://t.co/8gjQ5gX7qS pic.twitter.com/oeyXTlsA95 — Velvet Gossip Italia (@VelvetGossipIta) September 1, 2015

The pair has not yet confirmed the rumor; even the actress’ rep was tight-lipped. However, a source told NW  “It’s no secret they’ve been trying for a baby for a while, and the fact she’s flown out to be with him Down Under has everyone buzzing that it’s finally happened.”

Diaz and Madden met after Nicole Richie, Joel’s wife, set them up. T he pair eventually married at Beverly Hills on Jan. 5.

Are Cameron Diaz and Benji Madden expecting their first child together?! Full story: http://t.co/MbLHrRGGTO pic.twitter.com/gASr7n1uWX

— In Touch Weekly (@intouchweekly) September 1, 2015

So many people are getting excited for their first child, but the source also said that if the rumor is true, Diaz will not disclose anything until her second trimester. It would be a perfect birthday gift for the actress who celebrated her birthday on Aug. 30. Her husband posted a selfie with a sweet caption. “Happy Birthday to my Beautiful Wife,” her rocker husband wrote. “My best friend and Everything else – there’s so much I could write. I’m the luckiest guy alive – I get to spend the rest of my life right here. I love this Woman!! Many more Baby!!”

Happy Birthday to my Beautiful Wife❤My best friend and Everything else- there’s so much I could write. I’m the luckiest guy alive- I get to spend the rest of my life right here. I love this Woman!!❤️Many more Baby!! ❤️ 🎁🎉🎂 A photo posted by The B-man (@benjaminmadden) on Aug 30, 2015 at 4:30pm PDT