O.J. Simpson returned to a Nevada courtroom from his prison cell for the first time since December 2008 on Monday.

And, my, what four-and-a-half years in prison can do!

Simpson showed off a much fuller figure and a more pronounced gray hairline when he lumbered into the morning proceedings.

Simpson is attempting to earn a new trial over his September 2007 assault, robbery and kidnapping charges that landed him in the pokey in the first place.

The former football star, who was famously acquitted of double-homicide charges in 1994, was jailed for an armed confrontation against two sports memorabilia dealers in a Las Vegas hotel room.