Let's offer a big happy birthday to U2 singer Bono and wife Ali Hewson's daughter Eve. She celebrated turning 21 Saturday in Las Vegas with a big night out with her parents that included dinner at Tao Las Vegas, a couple of magnums of Dom Perignon champagne delivered to a private table at 10ak at the Mirage -- and Bono and Ali slipping the DJ there a CD of them singing Lady Gaga's 'Telephone' to accompany the champagne as Dad got on the mic to wish his daughter a special one.

We haven't been able to find video of Bono's speech -- or, more importantly, footage of him and wife singing Gaga -- but perhaps that's not so surprising. They were, after all, at a posh club full of celebrities like wild child Wilmer Valderrama and Laker star Kobe Bryant, a place where such things as privacy are generally respected. We kind of doubt footage of this fantastic experience ever will get out, as much as we would like it to.

Eve, by the way, is the second oldest of Bono and Ali's four children. She briefly attended New York University before dropping out to pursue an acting career, appearing in Paolo Sorrentino's 'This Must Be the Place' in 2011.