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Mariah Carey

Dimitrios Kambouris/Getty Images for Maroon Ent

Mariah Carey's Monday night holiday concert in NYC was full of wacky antics!

Last night, the 44-year-old singer took the stage at the Beacon Theatre for her All I Want for Christmas Is You: A Night of Joy and Festivity show, her first of six.

At one point during the spirited concert, Carey lost a shoe and continued to perform like a pro with one of her red heels in her hand! Apparently not even a little footwear malfunction can stop Carey from belting out her holiday hits.

Later in the show, the newly single star started crying while singing "Hero." The Elusive Chanteuse, who looked super sexy in a low-cut, cleavage-baring red ball gown, looked visibly emotional and wiped away tears from her eyes as she sang her power ballad.

During the same song, Carey stopped the orchestra mid-performance after a part of her mic pack that was connected to her earpiece fell off her dress. "Really? I'm sorry. Cut!" Carey yelled as she bent down to pic of a piece of the audio device. "I'm gonna take these out and lave them out!"

#AIWFCIY #MC20 opening night at the Beacon theater. Thank you everyone & Merry Christmas!!! #repost @iamawong

Een video die is geplaatst door Mariah Carey (@mariahcarey) op

A man then rushed on stage to help Carey with her wardrobe malfunction, which she blamed on "the sweat." Once she was good to go, Carey started belting out "Hero" again as the audience clapped and cheered.

Despite all the tiny concert hiccups, a source tells E! News that Carey's "voice was good" during the show and the audience "loved" the performance.

After the holiday concert, Carey took to Instagram to share a video from her performance of "All I Want for Christmas Is You." "finally got into the holiday spirit tonight & it's only the beginning! Loved celebrating with you! #AIWFCIY #Lambily # MC20," she captioned the vid.

She added, "#AIWFCIY #MC20 opening night at the Beacon theater. Thank you everyone & Merry Christmas!!! #repost @iamawong."