Katy Perry Celebrates Her Super Bowl Halftime Performance With a New Tattoo

PHOTO: Recording artist Katy Perry performs onstage during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium, Feb. 1, 2015, in Glendale, Ariz.PlayJeff Kravitz/Getty Images
WATCH Katy Perry Causes Fans to 'Roar' at Super Bowl Halftime Spectacular

Katy Perry celebrated her Superbowl XLIX halftime performance in a very permanent way -- by tattooing the roman numerals "XLIX" on her finger following her performance.

Early Monday morning, Perry posted a photo on her Instagram getting her new ink with the caption: "I thought it would be appropriate to draw blood tonight...XLIX"

I thought it would be appropriate to draw blood tonight... XLIX ??

A photo posted by KATY PERRY (@katyperry) on Feb 2, 2015 at 12:06am PST

Perry posted another photo of the finished tattoo on her finger.

??XLIX??

Une photo publiée par KATY PERRY (@katyperry) le 2 Févr. 2015 à 0h09 PST

Perry was the headline performer for the Super Bowl XLIX halftime show. She sang her hit songs "Roar," "I Kissed A Girl," "Teenage Dream," and "Firework." Missy Elliott and Lenny Kravitz also appeared.