Amanda Seyfried took to Twitter to let the TSA know that they missed something important. Seyfried accidentally brought a knife on board a plane, but the TSA didn't catch it.

The "Lovelace" actress says she accidentally brought the swiss army knife on to the plane after the Transportation Security Administration  officers didn't say anything about it. When she realized what happened, she took a photo of the knife and tweeted the TSA to let them know what happened in hopes that it won't happen again.

Along with the photo, she wrote, "Dear TSA: This Swiss Army knife wasn't detected through security and I unknowingly carried it on board. Scary!"

Around this time last year, the TSA announced that it would allow certain knives, like those with blades shorter than 2.4 inches and narrower than .5 inches in carry-on bags. This was supposed to go into effect in April 2013. However the TSA later abandoned the plan due to severe opposition from lawmakers and the air travel industry.

This isn't the only time Seyfried took to Twitter to complain about something that happened during her travels. Just last month, she tweeted "Quiz: Which airline hires sweat robot photographers to stalk their passengers? #businessasusual." This incident seems to involve American Airlines. The New York Daily News reported that Seyfried was outraged when she discovered photographers at LAX. "How the f--- did you know I'd be on this flight?" she asked those waiting for her at the gate. "I hate American Airlines! They always tip people off where celebrities are going to be."