The One Direction star posed for a selfie on Tuesday (29 December), showing off the results of his dedication to working out.
And WOWZER, we like those results!
Wearing nothing but a pair of shorts, 22-year-old Liam showed off his rock hards abs as he took a snap of himself in the bathroom.
He added: "Christmas weight dusted!!"
Just look at that washboard stomach!
Wolverhampton-born Liam has been spending the festive season with his family but we can't see one speck of festive indulgence in this racy snap.
We think we need to lie down.
As well as squeezing in a gym session or two, Liam's been enjoying a bit of a break before he heads back to work.
Along with the rest of 1D, he'll be busy promoting new album Made In The AM before the boys take a hiatus from March.
Let's hope his time out from 1D won't stop Liam from posting more snaps like this in the future.