Ariel Winter
Credit: Steve Granitz/WireImage

Ariel Winter knows how to make a sartorial statement. The Modern Family actress just graduated from high school, and she has definitely stepped it up for her last events as a secondary school student. From prom to graduation, Winter has worn one show-stopping outfit after another, and her grad party ensemble is no different.

The 18-year-old took to Instagram on Sunday to share a snapshot of herself from her graduation party the day before, and her dress is anything but expected. For the bash, Winter opted for a curve-hugging blush pink dress with a cutout at the bodice. She styled her red hair in voluminous curls and finished the outfit with a delicate bracelet at her wrist.

Winter's sister, Shanelle Gray, and brother-in-law, David Barry Gray, threw the party for her, and the actress wrote a sweet message along with the photo to thank them. "Couldn't be more grateful to @shanelle_gray & @davidbarrygray for throwing me the most amazing graduation party ever last night...the amount of love and support they've shown me for the past four years has been life changing. My sister is my absolute best friend and my everything...Thank you so much. I couldn't be luckier or more grateful," she wrote. "I was in awe last night and I still am that you guys love me that much to do all of that for me...I never would be where I am today without you guys saved me and taught me to be the person I am today. Dad...I love you!!! Thank you for always being there to support and love me as well and always put a smile on my face no matter what :). I'm so grateful for the bond we now share." Read her full shoutout below.