Kellan Lutz is a gentleman despite his fame. “I am a big helper at grocery stores,” the muscular “Twilight” star told us during a GQ event. “The other day at the store there was an old lady that was sweet as a button — I feel like she came out of an animated movie — and I asked if she wanted some help, and we got talking. She had such great life stories, and I had fun lifting the bags she had.” Lutz continues,“She was like, ‘Can I tip you?’ I was like, ‘No, no. I just had some time on my hands.’ ”