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Ariel Winter turned 18 two day ago, and arrived at the Screen Actors Guild Award red carpet fresh from her birthday party the night before.

The festivities, which sounded extravagant with a Moroccan theme, had 300 people in attendance. Of the huge guest count, E!'s red carpet correspondent Brad Goreski asked if she truly knew that many people. Ariel responded that she did, in fact, know everyone in attendance, but had good explanation.

"I'm Greek, you've got to factor in family members, how many cousins I have, stuff like that," the "Modern Family" star explained. She also shared fun details about the bash, explaining, "We had Aladdin guys and belly dancers and we had a a lot of really cool things. My cake was awesome!"

Despite partying the night before, the actress looked stunning on the red carpet, wearing a black Romona Keveza mermaid gown. For her first red carpet as an official adult, the star opted for a more mature look, as the dress featured a very low back and a sexy silhouette.

Though it looked phenomenal on the brunette beauty, Ariel explained that the gorgeous look wasn't exactly comfortable.

"In the car, when I tell you that I laid down like this and stared at the ceiling because I could not sit up, that is exactly what happened," she dished to Brad, who also asked what event was more difficult to pick a dress for -- the SAG Awards or the prom.

Ariel answered that the awards shows were "definitely" more difficult to pick an ensemble for. "They're both stressful, but I think it definitely is more stressful because there's so much more pressure on the red carpet for people."

Ariel is up for a SAG Award for Outstanding Performance by an Ensemble in a Comedy Series along with her co-stars from the hit ABC sitcom, "Modern Family."