By ROBIN MIZRAHI

Mariah Carey is riding high with the success of her latest album — and she's going to celebrate her comeback by getting married!

Friends say the sexy songbird will walk down the aisle in June 2006 with the man who helped put her back on top of the pop charts, music executive Mark Sudack.

Said a pal: "Mariah has tried to keep her relationship with Mark under the radar. She guarded the romance fiercely but she's tired of hiding him."

According to an insider, Mark, 29, was a staffer at Mariah's record label when she hired him as her "house photographer" in early 2004. He then leapfrogged up the ranks at Mariah's company to the point where he was listed as co-executive producer on her hit album The Emancipation Of Mimi!

Said the pal: "She considers Mark her lucky charm — and largely responsible for her best-selling CD in years."

Considered her strongest album since the late '90s, Mimi debuted in April at number one with the highest first week sales in the singer's career.

Mariah, 35, was married to music bigwig Tommy Mottola from 1993 to 1998 and was then linked to Yankee great Derek Jeter, Latin singer Luis Miguel and rapper Eminem. But now she only has eyes for Mark.

Said the friend: "Mariah is elated — and she'll soon be making good on the promise of her hit "We Belong Together" when she weds her beau!"