Kristen Bell can't focus on her second pregnancy.

The 33-year-old actress, who recently announced she is expecting another baby with husband Dax Sheppard, admits she is too busy raising their 15-month-old daughter, Lincoln, to think about names for their unborn child.

The 'Veronica Mars' star told PEOPLE magazine: ''It's hard to take focus off her [Lincoln] and think about the second baby, even though the second baby is here and growing.''

She added: ''Lincoln's like my television. I love being a mom and I love watching her explore the world and talk to me about things. It's mostly babbles, but she signs, and so we can communicate. I've never been so interested in anything in my entire life. I have heard parents say that when you have a second child, your love doesn't divide, it multiplies, so I have confidence that will happen. And then eventually, I'll explode.''

The couple are ''completely stumped'' for a name for their new bundle of joy at the moment, but Kristen is having an ''easy pregnancy.''

The 'Frozen' star said: ''So far, it's been the exact same, and Lincoln came out like a champ. Lincoln was an easy pregnancy and an easy baby, so hopefully this one will follow the same path.''