By | January 31 2013 11:18 AM

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Stacy Keibler
Photo: Reuters

Stacy Keibler

Stacy Keibler is a fan of the Baltimore Ravens. The former wrestler and current boyfriend of George Clooney used to be a Ravens cheerleader.
Carmelo Anthony
Photo: REUTERS

Carmelo Anthony

Carmelo Anthony will be rooting for the Baltimore Ravens in Sunday's Super Bowl. Although born in New York City, Anthony grew up in Baltimore.
Phelps
Photo: Reuters

Phelps

18-time gold medalist Michael Phelps denies rumors of a 2016 Olympic bid.
Josh Charles
Photo: Twitter/@MrJoshCharles

Josh Charles

Actor Josh Charles (l.), a Baltimore native, will be pulling for the Ravens in Super Bowl XLVII
Robin Williams
Photo: Mario Anzuoni / Reuters

Robin Williams

Robin Williams is known for his humor, but the actor is dead serious when it comes to his devotion of the 49ers.
Jennifer Garner
Photo: Reuters

Jennifer Garner

Jennifer Garner will be cheering for Colin Kaepernick and the San Francisco 49ers in the Super Bowl.
Huey Lewis
Photo: Wikimedia Commons

Huey Lewis

Singer Huey Lewis bleeds red and gold as a fan of the 49ers.
Nancy Pelosi
Photo: REUTERS/Stringer Egypt

Nancy Pelosi

House Minority Leader Nancy Pelosi hopes the 49ers win in a landslide in the Super Bowl. The Bay Area congresswoman represents San Francisco in the House. Pelosi hoped for a Baltimore-San Francisco Super Bowl because she is a native of Baltimore.

Beyoncé isn’t the only celebrity bringing star power to Sunday’s Super Bowl.

When the Baltimore Ravens square off against the San Francisco 49ers for Super Bowl XLVII in New Orleans, both teams will have famous fans rooting for them.

In the Ravens corner are actor Josh Charles, Baltimore native and Olympic swimmer Michael Phelps, New York Knicks Superstar Carmelo Anthony and former WWE wrestler and George Clooney’s current girlfriend, Stacy Keibler.

The 49ers aren’t without their share of celebrity fans. Among the stars who will be pulling for San Francisco in the Super Bowl are actors Robin Williams and Jennifer Garner, singer Huey Lewis and House Minority Leader Nancy Pelosi (D-Calif.)

It’s fitting that both the Ravens and 49ers will have celebrity fans rooting for them in the Super Bowl, because one of the major stories headed into Sunday’s game could have been scripted by Hollywood.

Ravens coach John Harbaugh will be going up against his younger brother, 49ers coach Jim Harbaugh.

It’s the first time two brothers will be coaching opposing teams in the Super Bowl, and the distinction also marks the first time two brothers are coaching opposing sides in the championship game of a major American sport.

In another Super Bowl story, Ravens linebacker Ray Lewis announced he would retire at the end of the season. Should Baltimore defeat San Francisco, Lewis would retire on the top by adding another Super Bowl ring to his career.

However, as excitement builds for Super Bowl XLVII, oddsmakers believe Lewis will end his career in defeat.

Bookmaker sportsbook.com lists the 49ers as a 3 ½-point favorite for Sunday’s game as of Thursday morning. That gives Wiliams, Garner, Lewis and Pelosi reason to cheer, and Phelps, Anthony, Keibler and Charles reason to worry.

At bookmaker bovada.lv, the spread is slightly higher, with San Francisco listed as a 4-point favorite as of Thursday morning.

Click through the slideshow for pictures of celebrity fans of the 49ers and Ravens.