Now Calvin Klein underwear bosses want to cash in on the 24-year-old's rising popularity and have reportedly signed Lutz up to front their next advertising campaign.
And fashion insiders claim Lutz's photoshoot will be reminiscent of the sexy ads featuring Mark Wahlberg, which were shot in the 1990s during the actor's transition from rap alter ego Marky Mark to Hollywood star.
A source tells the Fox News 411 blog, "He's going to be their new Mark Wahlberg. Kellan has been signed to Calvin Klein for a huge campaign that will feature him in his skivvies [underwear] all over billboards and in magazines…
"The executives have a plan to model the ads very similarly after the famous Mark Wahlberg campaign in the '90s. They want to recreate the look of the hugely successful ads."