"We should take time-lapse pictures!"

The words are spoken in an excited rush, halfway through an ad about free range eggs. Elsa turns to stare at Anna, who rolls her eyes at the expression.

"Come on, it'll be fun! Everyone does it!"

The corner of Elsa's lips quirk. "Takes pictures of themselves getting fat?" she sasses.

"No. They take pictures of themselves growing a baby. You have two!"

"Anna, I'm almost twenty weeks. It's too late to start," Elsa argues.

"Pfft. It's never too late. Come on, trust me with this!"

Reluctantly, Elsa nods.