Pink and Gwen Stefani are reportedly beefing after the No Doubt member rejected Pink's invite for a playdate. According to Radar Online, a source said that Pink suggested that she and Gwen bring their kids together for a playdate in Beverly Hills. However, to Pink's dismay, Gwen reportedly declined the offer. The insider continued, "Pink was pretty upset when she got an email a couple of days later from Gwen that basically said, 'not now and not ever' to the idea that they bury the hatchet by having their small children meet each other." In other news, as previously reported, Gwen gave birth to her third son -- Apollo Bowie Flynn Rossdale last Friday (February 28th).