'Law & Order: SVU' Teases Kelli Giddish's Final Episode — and a Surprise Wedding — in New Promo

Kelli Giddish has a few more weeks of playing Det. Amanda Rollins — but the surprise wedding bells from her final episode are already ringing.

A teaser for the fall finale of Law & Order: SVU shows Giddish, 42, wearing a white dress and walking into her apparent courthouse wedding.

It appears she'll wed Assistant District Attorney Sonny Carisi (Peter Scanavino).

The quick clip of the wedding shows Giddish hugging Mariska Hargitay's Det. Olivia Benson after she enters the courthouse in her gown.

"You gonna start crying already, Liv?" Ice-T as Odafin Tutuola jokes.

Other moments in the promo highlight some of Det. Rollins' best moments, even the first time she met Det. Olivia Benson.

"I'm leaving SVU," Giddish's character says in a voiceover. Giddish's last episode will air on Dec. 8.