Demi Moore & Ashton Kutcher Reunited at Wedding

Demi Moore and Ashton Kutcher were face to face last night after ending up at a wedding together ... this time as guests.

The former husband and wife were at the wedding vow renewal for Madonna's manager in Rio de Janeiro, along with a slew of other celebs.

Kutcher and Moore married back in 2005 and divorced in 2013, but it was an amicable split and he even kept a good relationship with her daughters.

As we previously reported, half of Hollywood showed up to Rio, including Anthony Kiedis, Flea, Diddy, and Chris Rock.