Appearing on a U.S. talk show, she nodded when asked if they were going, before clarifying that "us five Spice Girls" had each received an invitation.
Spice Girls fans across the world rejoiced when the all five band members reunited at Geri Horner's home last month.
Asked by TMZ if the Spice Girls are indeed planning a few shows, he nodded, smiled and said, "It may be four, not five", suggesting Beckham might simply sit out a tour and let her four bandmates take the spotlight.
The Spice Girls, Scary Spice Mel B, Baby Spice Emma Bunton, and Ginger Spice Geri Horner have announced a reunion to celebrate the 20th anniversary of their single Wannabe.
The Spice Girls are attending Prince Harry and Meghan Markle's royal wedding in May, according one of the group's members - and they could even perform at the reception.
When asked directly if the group would be performing, Mel B.'s awful poker face gave her away. She did not directly reveal that they are performing, but hosts Loni Love, Jeannie Mai, and Tamera Mowry could not help but celebrate in advance by judging just Mel B's reaction.
She added: 'Why am I so honest?' I need to go, I'm going to be fired.
Harry, Queen Elizabeth's grandson and fifth in line to the throne, will tie the knot with actress Meghan Markle on May 19 at Windsor Castle..
She was then asked whether the girl group was performing, and, well, her response was everything.
Addressing speculation he'd already landed the royal gig, the "Shape of You" hitmaker said: "They said, "If you were asked, would you say yes?' And I was like, 'Of course".