Ryan Gosling's baby has a hilarious Twitter account

Eva Mendes and Ryan Gosling have welcomed their first daughter together. Photo/Getty

The newborn daughter of actors Ryan Gosling and Eva Mendes already has a Twitter account.

Less than an hour after US media reported the star couple had welcomed their first child, a user set up a parody page for the tot.

And although Gosling Jr was allegedly only born last Friday, the little girl's "tweets" are witty beyond her five days on this planet.

The "Hey Girl" meme already has a couple of mentions and the creator also teases her Hollywood heartthrob dad's hipster following.

"My dad just wrote me a lullaby. It starts with 'Hey Girl"' reads one post.

Another post reads: "In the future, I'll smoke American Indian cigarettes. Dad won't approve, but he's a feminist.

"The account has gained hundreds of followers in a few hours and puts baby Gosling in the same class as Prince George and Blue Ivy, who have also inspired parody Twitter pages.

"I may or may not be already dating apollo bowie flynn rossdale," one of the tweets said in reference to Gavin Rossdale and Gwen Stefani's six-month-old son.

Mendes, who began dating the Canadian actor in 2011, gave birth last Friday, according to US Weekly.

Their representatives are yet to respond to requests for comment.

While many fans tweeted about their state of emotional despair over the baby news, others spawned a new #heybaby hashtag and shared hilarious spin-off "Hey Baby" memes.

"Hey Baby, how about I grab you a delicious bottle and we talk about your feelings," read one such meme.

"Hey Baby, you don't have to wear ruffled headbands. Gender norms don't define you," another said.

Hey girl,
I'm Ryan Gosling's baby. Now get me another bottle!

— Ryan Gosling's Baby (@GoslingsBaby) September 17, 2014

- AAP