New mom Mariah Carey is the latest celeb to become Jenny Craig’s brand new Ambassador, and RadarOnline.com is live streaming the big announcement, scheduled to begin around 11:30 am ET Wednesday.

The Vision of Love singer -- who’s lost 70 lbs since giving birth to twins last April -- is being joined at a news conference at the Four Seasons Hotel in New York by Jenny’s CEO Dana Fiser.

Carey, 42, credits the Jenny food plan and exercise with helping her shed her baby weight.