Tina Turner ??- It’s MY WEDDING … I’ll Wear a GREEN DRESS If I Want To

Tina Turner became Mrs. Erwin Bach during a massive wedding ceremony in Switzerland this weekend … but the bride wasn”t dressed in white, she was lean and mean in green.

The 73-year-old singer had been shacking up with her 57-year-old beau for the past 18 years — but finally decided to make it legal when he proposed to her in April. FYI — Bach is a German music executive.

According to reports, 120 people attended the lakeside ceremony near Turner”s home in Zurich — including Oprah, David Bowie and Bryan Adams.  The ceremony is said to be “Buddhist-inspired.”

As for Tina”s dress, the emerald gold stunner was reportedly custom-designed by Giorgio Armani.

It”s Tina”s 2nd marriage — she famously divorced Ike Turner in 1978.