Pink is back in the studio.

The 'Just Give Me A Reason' hitmaker took to Instagram on Thursday (30.03.17) to share a video of her in the studio following the birth of her son Jameson three months ago.

She captioned the video: ''I like this song.''

Meanwhile, Sia and Pink recently unveiled a new song 'Waterfall', which has been penned by songwriters Stargate - Tor Erik Hermansen and Mikkel Storleer Eriksen - as well as Sia, Major Lazer's Diplo and Jr Blender.

Sharing a clip of the song on their Instagram account, Stargate wrote: ''Setting fires with @pink and @siathisisacting! hit that link in the profile to pre-save our new song #Waterfall to your @spotify #whoisstargate (sic)''

Meanwhile, Pink - who also has five-year-old daughter Willow - is thrilled to be a mother to two lovely children and has been doing all she can to stop her daughter feeling jealous of her baby brother including holding a party to celebrate Willow becoming a big sister.

She explained: ''He's delicious. I literally put Jameson down when she walks in the room. [Willow is] a little weepy these days so we're working it out.''

And her husband Carey Hart previously revealed Willow was ''over the moon'' about having a sibling.

Speaking before the birth, he added: ''Willow is over the moon. She's been talking about how she wants a baby sister. She built a bicycle for him or her. So we're going to finish it up after No. 2 shows up. She tore the bike all apart and after No. 2 shows up, she's going to decide the colours that she wants to do for it.

''I told her, 'Look, he or she is not going to be able to use it for a while - but they'll be ready for it' ... Right now, she's very excited, until they start taking her toys and breaking her stuff, and then we'll see how it goes.''