Celebrity baby names: Arlo
Arlo was the first child for the couple, although if Adam has his way, she won't be the last.
In a Reddit interview in 2015, he was asked how many babies he'd like with Leighton.
'I say 12,' he replied. 'And I decide.'
Arlo, meaning 'army' or 'hill', is traditionally a baby name for boys, but we agree with Leighton and Adam - it's a lovely choice for a daughter too!