Former child star Macaulay Culkin, 31, was photographed while out in New York this week, looking like a 56 year old. The usually young and fresh-looking actor was rather pale and extremely thin.

Folks over at Entertainment Tonight got their hands on some photos of the actor walking while holding a can of Red Bull. The photos have left many wondering why the Home Alone actor looks the way he does. ET plans to reveal more photos of the gaunt-looking actor tonight.

The picture, which may have been shot from a bad angle, has sparked so much interest that it has become a trending topic on Twitter. Here's what users had to say:

-- Whoa! We barely recognized Macaulay Culkin!- LexCerrillos

-- Macaulay Culkin has changed so much omg. - aaliyahM

-- Kevin McAllister not looking so good these days. - ptheriault

-- Omg Macaulay Culkin looks soooo different.. Use to think he was soo hot :/ - tiffjacobss

-- Yep it was just a matter of time for Macaulay Culkin to trend, that picture surfacing of him is wicked hideous :( - Saraheedtripper

-- OMG!!! Macaulay Culkin, its so sad to look him like that :'( He was so cute... What happened w/ him? :'( Hope he'll be fine.. - ImDBlueGangsta

-- Macaulay Culkin looks far older than 31, he looks more close to retirement :o - SiiShell

Related Article: Macaulay Culkin is 'in Perfectly Good Health,' Says Rep: Report [PHOTO]