Mr. Astin (on the right, Elijah Wood, Frodo, on the left)is indeed looking a bit portly.
Here’s a little snippet from The Dominion’s Diary section (short non-serious snippets) that Susan sent in… Well now, this is a pressure that’s not so bad!

As if the pressures on young men aren’t enough already! So Lord of the Rings star Sean Astin, pictured, has been told by his director, Peter Jackson, to put on weight for his role as hobbit Sam. Extra helpings of shepherd’s pie and pud! A bit naughty of him, then, to persist with rigorous exercise. He was spotted sweating it out at the Renouf tennis centre. It puts Liv Tyler‘s reported battle to stay elfishly thin in perspective