celinefamdisney.jpgCaesars Palace/Celine Dion

All together now - aww!

Celine Dion sent the following photo to Caesars Palace employees (she'll be performing shows there starting March 15th) along with a special holiday greeting card...

The 42-year-old singer writes that her and her family "are looking forward to returning to Las Vegas, and with the twins Nelson and Eddy, there's going to be a lot going on around our house!!!!"

And don't forget about Celine's hubby Rene Angelil and their other son, Rene-Charles, also pictured! SO adorbs.