Jenny McCarthy and Donnie Wahlberg are engaged.

The 41-year-old presenter unveiled her stunning yellow sapphire ring on The View today, and revealed her 11-year-old son Evan - who she has with former spouse John Mallory Asher - helped the New Kids on the Block singer with his proposal last weekend.

After hiding her hand behind the show's desk, Jenny showed off the ring and exclaimed, "I just got engaged!" She then wept as she recalled the proposal and explained Donnie, 44, had got down on one knee to pop the question. "This weekend I was sitting with Donnie ... and he went into the other room and Evan out came with a card that said 'Will' and he handed it to me. Then Evan ran away and came in with a card that said 'You.' I started crying and then Evan came into the room with the word 'Marry' - but spelled wrong. Last Donnie came out with Evan and Donnie's shirt said 'Me' and he got down on his knee ... Of course, I said 'Yes.' In that moment Evan yelled, 'I have another dad!' and it made all of us cry and I feel like the luckiest girl in the world and he's so wonderful," she said.

The couple - who started dating last summer - are unsure when they will marry. "We don't know yet," Jenny admitted.

She said they were considering August, but her co-host Barbara Walters said they could tie the knot in her New York home if they marry in September. However, she added, "On the wedding night, you cannot stay in my apartment."

Jenny previously admitted Donnie had made her reconsider her views on marrying again. "I've said on every interview that I was like, 'Never get married again ever,' and, of course, you never say never. I think he would be an amazing husband, so if he does, I would for sure say yes. I wouldn't be surprised if I was the one proposing," she has said.

Donnie has two sons from his nine-year marriage to Kim Fey, which ended in 2008.