Celine Dion's Twin Boys Were Baptized in Sin City—Fun!

Celine Dion adorable twins Nelson and Eddy have been baptized in a glitzy Las Vegas ceremony.

Celine Dion‘s 4-month-old boys, Nelson and Eddy, were bundled up in flowing Dior baby gowns and blessed on Sunday, March 6 in a traditional Greek baptism at Las Vegas’ St. Elizabeth Ann Seton Catholic Church.

The singer’s representative tells People.com the Melkite Greek Catholic blessing — which honored Celine’s husband Réne Angélil’s heritage — was a “beautiful, traditional family ceremony.”

More than 200 friends and family flocked to the chapel, including the five godparents; Celine’s sister Linda; Réne’s three eldest children (from a previous relationship) and the couple’s 10-year-old son Réne-Charles.

And there were special spots on the guest list for the medics who helped Celine and Réne conceive, after several sessions of IVF treatment.

After the baptism, guests celebrated at a reception at the nearby Caesars Palace, where Celine begins her new show on March 15th.

But the twins were all partied out — and sneaked off for a nap!