A$AP Rocky and Rihanna announced that they were expecting their third child on fashion's biggest night of the year, but they were dropping hints to one important person before the Met Gala ever commenced. The "Diamonds" singer, 37, debuted her baby bump on the red carpet at the Metropolitan Museum of Art on Monday, May 5. Rocky, 36, who was an official co-chair of the gala, appeared on Late Night with Seth Meyers alongside Vogue editor-in-chief Anna Wintour on Wednesday, May 7. While on the show, Wintour revealed that the couple were hinting at their pregnancy news at a dinner the night before the Met Gala. "Rihanna and Rocky and I and some other people actually had dinner the night before the Met, and he was dropping all these hints. And I was being really English and not saying anything," Wintour revealed. "She didn't pick them up," Rocky said, prompting Wintour to reply that she was aware but was "being polite." Elsewhere in the interview, Wintour revealed that Simone Biles, who attended the Met Gala with her husband Jonathan Owens, said that "walking up the blue carpet was more intimidating than the Olympics." Inspired by that, she joked about installing "a pole vault on the carpet next year." "Maybe Rihanna's going to go into training for the '28 Olympics," Wintour quipped. While on the red carpet at the Met Gala, Rihanna told Access Hollywood that she was thrilled that she was able to show off her baby bump after hiding it from photographers. "I feel a lot better that I don't have to suck my stomach in anymore," she told the outlet. The pregnant mom of two told Entertainment Tonight that she was "shockingly feeling okay and not too overwhelmed at the moment." "I mean, at first, it was kinda like, 'Ah!' And I'm tired, but then I'm excited," she said. Rihanna also assured fans that the pregnancy news would not necessarily delay her upcoming ninth album, saying, "No. Maybe a couple videos, but I can sing!" Rocky also told the Associated Press that "it feels amazing" to have another baby on the way. "It’s time that we show the people what we was cooking up," he said, adding, "And I’m glad everybody’s happy for us ’cause we definitely happy, you know." While attending the Met Gala this year, Rihanna also reunited with Ciara. She and the "Goodies" singer, 39, formally buried the hatchet and made it clear that they were on good terms after being caught up in a bitter Twitter feud back in 2011. "It was so sweet running into her. I just have to shout her out because I'm so proud of her," Ciara gushed about her pop peer during a May 6 appearance on Sherri. She revealed that she, Rihanna, A$AP and her husband NFL player Russell Wilson joked around about their expanding families. "This is her third baby she's having now. We were cracking up talking about ... cinco. You know I have four. So [Wilson] starts talking about cinco [Spanish for five, alluding to their fifth child]. So we start talking about quatro [Spanish for four] for her, but she's gotta get through the tres [Spanish for three] first. The third baby first." Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer​​, from celebrity news to compelling human interest stories. "I'm proud of her, too. She is rocking it in such a great way," Ciara said, adding, "What you get to see through our journeys as moms, just every woman that's doing it, that you really can do it. You can live your life. You can have beautiful, precious babies and still pursue your dreams, be successful." Rihanna and Rocky are already parents to sons RZA Athelston, 3 this month, and Riot Rose, 21 months.