Kelly, 25, was one of several Lionesses who attended the event on Monday.
The Man City attacker was joined by Beth England, Jess Carter and Alessia Russo.
Former Arsenal and England star Alex Scott also made an appearance as she wore a stunning outfit.
And several members of the England team got a snap alongside Spice Girls superstar Geri Horner.
But Kelly’s style choice was equally as impressive as she donned a revealing dress, black blazer and high-heel shoes.
She added the caption: “Celebrating the greatness of so many inspirational women was an honour, thank you Glamour✨.”
In response, many of Kelly’s 773,000 Instagram followers praised her daring look.
One said: “What a beautiful girl, looking stunning 🔥❤️xxxxxxx.”
Another added: “Gorgeous as always 😍❤️.”
A third replied: “You are inspirational in every way 🙌.”
While a fourth simply responded: “Unreal 😍.”
Kelly has been capped 35 times by England and scored seven goals.
She shot to fame when she bagged the winning goal in the Euros final against Germany last year.