Fantasia Barrino is ready to say I-do! 

The 31-year-old American Idol winner took to Instagram on Monday to flaunt her fit figure ahead of her weekend wedding to boyfriend Kendall Taylor—and the curvaceous beauty is looking better than ever. 

"I know @sosonya15 BOUT TO KILL me today for my Big Wedding Day on SATURDAY OMG!!! I NEVER THOUGHT THIS WOULD HAPPEN FOR ME...Im going to stay Tight and Right for him.. Mr. Taylor.. You guys I'm so happy and excited..." the singer wrote of a side-by-side shot in which she's showing off her enviable booty and her flat tummy, giving her trainer a shout-out.