Kelsey & Kayte's Wedding -- A Little Spicey

2/26/2011 4:30 PM PST

Kelsey Grammer & Kayte Walsh's Wedding -- A Little Spicey

There was an emotional moment during Kelsey Grammer and Kayte Walsh's wedding, TMZ has learned, when Kayte told Kelsey what she wants ... what she really, really wants ... during a karaoke rendition of the Spice Girls classic song, "Wannabe." Zigazig-ha!

Sources at the wedding tell TMZ ... Kayte and her pals did a little karaoke during the party, and Kayte sung "Hotel California" solo. We're told Kelsey and Kayte sang a song by The Killers, with Kelsey singing backup.

The DJ's set list included Lady Gaga's "Poker Face," Beyonce's "Single Ladies," Madonna's "Vogue" and "Brick House" by The Commodores.

As for the sappy emotional stuff, we're told Kelsey told the guests he was first drawn to Kayte's "long sexy neck" (is that a compliment?" and that Kayte asked God to give her a sign if Kelsey was the one ... and she passed by a coffee shop in London called Frasiers.

Flipping through the channels at 2:00 AM would have given her the same sign.