Bump wars! Well, not really.

Alyson Hannigan was among the many celebs offering their congrats via Twitter to Hollywood's newest mom, Jessica Simpson.

Still pregnant with her second child, American Reunion star Hannigan, 38, joked that she can now claim a certain crown among famous ladies.

PHOTOS: Jessica's famous bump

"Congrats to Jessica Simpson! Does this mean I now have the biggest baby bump in Hollywood?" Hannigan wrote after news broke Tuesday that Simpson, 31, gave birth to Maxwell Drew Johnson, a baby girl weighing a healthy 9 lbs., 13 oz.

PHOTOS: Nude, pregnant stars

Hannigan and husband of eight years Alexis Denisof are already parents to daughter Satyana, 3. The second-time mom-to-be is due in June, but recently joked on the Rachael Ray Show that folks seem to assume she's due earlier than that given the size of her bump.

PHOTOS: Pregnant stars

"The last couple of times I've been at stores, people have been like, 'Oh you're ready to pop, right?'" she said in early April. "I'm like, 'Actually I have a couple more months.' Somebody said, 'You're sure there's not two?' I keep asking my doctor the same thing."

This article originally appeared on Usmagazine.com: Alyson Hannigan on Jessica Simpson: Now I Have the Biggest Baby Bump!