She may have extended a big "f*ck you" to the media when the news broke that she was pregnant, but Zoe Saldana seems to be in a much better mood lately -- in fact, the Guardians of the Galaxy star is absolutely glowing!

The pregnant actress and her hunky hubby Marco Perego went for a hike in the Hollywood Hills on Tuesday morning, and the parents-to-be couldn't stop smiling and giggling. And their dog?! So cute!

After working up a sweat, the couple cooled off at home with -- you guessed it -- the ALS Ice Bucket Challenge. "I am accepting James Gunn's challenge to take on the ice bucket challenge, Zoe says in the video below. But there's a twist! While turning to the side and rubbing her pregnant belly, she says, "Obviously, I can't do it myself so I nominate my husband to take on the challenge."