Gossip Girl star Taylor Momsen was released Wednesday from Los Angeles' Cedars-Sinai Medical Center after a brief hospitalization.

"I have been treating Miss Taylor Momsen for the last few days," Momsen's doctor, Shawn Nasseri, told Us Weekly. "She has been hospitalized for a severe, potentially life-threatening throat infection since Sunday." Yikes!

"She has been an excellent patient, and after aggressive antibiotics and medications, she's expected to make a full recovery in the next 3-5 days."

Taylor Momsen, 15, was in L.A. to take a school exam when she "woke up with a sore throat," a source close to the actress told the celebrity news magazine.

"She thought it was just a common cold, but was advised to see an ear, nose & throat specialist before getting on a plane back to New York," the source said.

After discovering the serious situation, "her mom flew out to get her, and is flying back [to New York] with Taylor this week. She's in unbelievable spirits."

Here's wishing Taylor Momsen a speedy recovery!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.