The One Direction hunk already has almost 600,000 fans on the social media site after signing up at the weekend and has so far posted six photographs from the band's 'Where We Are Tour'.
He took to Twitter last night (27.04.14) to tell followers he was setting up an account, writing: "Right I'm gunna try figure this Instagram sh*t out I sound like a grandad (sic)."
He added his profile name, posting: "Insta ... fakeliampayne."
Liam then posted images of him with friends on tour, a photograph of his Sunday dinner, his tour shoes and a snap of himself after the band's gig, accompanied with the caption: "What a showwwwwwwwwww ahhhhh I love my job... MUTHAF@#!N CRAZZZYYYYY (sic)"
He later posted: "half a million followers on my Instagram in half a day aha crazy times hope that I can make my insta fun for u (sic)."
However, the 'Little Things' hitmaker could become the victim of hacking as fans have been doing their best to guess his Instagram password.
He tweeted: "Lmao can people stop trying to break into my Instagram I only just got lol that sh*ts clogging up my mail (sic)."
The 20-year-old star later added: "Stop trying to guess my password!!!!!!!!!!!!!!!!! My emails going crazy with junk and I need it to make u all nice music for new albums!! (sic)"
Meanwhile, Liam and his band mates - Harry Styles, Louis Tomlinson, Zayn Malik and Niall Horan - have kicked off their first stadium tour, playing 69 dates across the world.
Follow him on Instagram here.