Gwen Stefani, Gavin Rossdale Pick Up Zuma From School (PHOTO)

Despite the presence of an adorable pomeranian puppy in her arms, Gwen Stefani looked a bit glum as she and Gavin Rossdale picked up son Zuma from school in Los Angeles Tuesday.

We're guessing the No Doubt frontwoman was tired from her performance the previous night, about which she tweeted:

Despite recent rumors that the couple's relationship was on the rocks, Rossdale has said that they're still going strong.

"My biggest accomplishment is my marriage so far," Stefani, 43, told Marie Claire about reaching her 10-year anniversary with Rossdale, 47, in the magazine's October issue. "Because it’s hard, everyone knows it’s hard.” She added, “[Marriage] is something that I always wanted to do successfully. It was a dream of mine. I like the official-ness and the family-ness of it all, having the same name and making decisions together.”