'Downton Abbey' star Dan Stevens debuts startling new look

'Downton Abbey' star Dan Stevens debuts startling new look
In this July 31, 2011 file photo, actor Dan Stevens poses for a portrait, in Beverly Hills, California. (AP Photo/Chris Pizzello, File)

Above, you can see a photo of Dan Stevens as we all have come to know and love him as Matthew Crawley on the PBS hit "Downton Abbey." However, over the weekend, Stevens showed up at the 24th Annual GLAAD Media Awards looking...different.

Most noticable was Stevens' weight loss, but he was also sporting a different hair color and a mustache. 

Click through for one more reminder of the Dan Stevens everyone is used to -- and then see a photo of his transformation. What do you think of the his look?