Kellan Lutz and Jackson Rathbone have come a long way. During the last four years, the two actors have been busy shooting theTwilight Saga‘s five installments — so much so that they admitted to Celebuzz that it was hard to keep track when they were working on the final film, Breaking Dawn – Part 2.

PHOTOS: Kellan Lutz goes shirtless for beach day with his girlfriend 

PIC OF THE DAY: Don’t Kellan Lutz and Kate Upton look cozy together on set of their new joint fashion shoot!? 

More pics of the model-twosome here! 

Kellan Lutz turns 27 today! Wish him a Happy Birthday and check out his hottest shirtless moments!

Can you guess which Hollywood hunk went incognito during his workout?

On a scale of 1 to 10, how hot is this Kellan Lutz ad?

Oh la la! Kellan Lutz strips down for a sexy Dylan George + Abbott campaign. How hot is his look? …[more photos]

Oh, this one hurts: Kellan Lutz’s new blonde ‘do, Yay or Nay?

It’s a battle of the suits! Which Twilight hottie looks better suited up?