Zoe Saldana's baby bump is getting so big, she's running out of clothes to wear ... no joke!

After going for a hike, Zoe and her hot husband Marco Perego went shopping at Mom's the Word in Los Angeles, and seeing as she could barely keep her belly covered with her white tee, it looks like it's definitely time to update her wardrobe.

The Guardians of the Galaxy actress hasn't confirmed reports that she's having twins, but last week she finally acknowledged that she's preggers when she forced Marco to take the ALS Ice Bucket Challenge. "I am accepting James Gunn's challenge to take on the ice bucket challenge,” Zoe said. But then she turned to the side and rubbed her pregnant belly, and added, "Obviously, I can't do it myself so I nominate my husband to take on the challenge."

Pregnant Hayden Panettiere did it though!