She's Back! Ariana Grande Stuns In First Performance Since Pete Davidson Split

What personal problems? Ariana Grande took the stage in her first performance since her split from ex-fiancé Pete Davidson and the death of her ex-boyfriend Mac Miller for NBC's A Very Wicked Halloween: Celebrating 15 Years on Broadway.

In the pre-taped special, Grande, 25, sang an emotional rendition of "The Wizard and I." 

The songstress stunned during the performance, as she wore a plunging green strapless top with black pants and thigh-high boots.

The "God is a Woman" singer topped off the look with green lipstick and her signature high ponytail. Grande ditched her engagement ring for the performance and covered up her "Pete" finger tattoo.

Grande shared her excitement over being involved in the special on the day of rehearsal.

"Honored to be included in the celebration of 15 years of my favorite musical of all time," Grande captioned a photo of her script. "Wouldn't miss it for the whole universe."

The performance comes after the death of her ex-boyfriend, who died of an apparent overdose in September. The pre-taped special was filmed only days after her split from Davidson.

RadarOnline.com exclusively reported Grande showed up late to rehearsal on October 15.

"She skipped rehearsals this morning to focus on clearing her head," a source told RadarOnline.com. "She showed up later in the afternoon. Her eyes were puffy."

Although the insider claimed she seemed "sad" while at rehearsal, she "held it together" during practice.

"Her performance was fantastic," the source said. "She was in true Ariana Grande form. She killed it!"

While she didn't talk about Davidson at the rehearsal, she was overheard saying, "He's so mean!"

As for the October 16 taping, a separate source told RadarOnline.com she "gave a flawless performance." 

"She seemed positive, and appreciated all of the cheering," another source told RadarOnline.com.