But when eldest child Gunner, who already has two younger sisters, cuts into the cake to discover the inside is pink, he bursts into tears as he realises he will be outnumbered 3 to 1.
He stammers: 'It's a girl, it's a girl, it's a girl…it's a girl?'
After his parents confirm the news, he starts to cry, repeating: 'I don't want it to be a girl'
'It's another girl…I hate girls…every time it's girl girl girl,' says Gunner.
'There's too much girls, I don't want five girls, there's too much.'
His father, who is filming, corrects him that actually there will only be three little girls in their family, and that he's sure Gunner will love his new little sister, to which he shouts 'NO.'
We don't think that was the reaction his parents were hoping for….