Supermodel Irina Shayk pulled out all the stops for the 2014 Oscars, wearing a gorgeous deep blue gown that showed off her sexy cleavage at Elton John's 22nd Annual Oscars party benefitting the Elton John AIDS Foundation, followed by a sexy black lace dress that she changed into to attend the Vanity Fair post-Oscar bash.

Irina, who is currently dating soccer superstar Christiano Ronaldo, had a busy February -- in addition to leading the Russian delegation in the Sochi Olympics opening ceremony, she was also featured in the 50th anniversary edition of the Sports Illustrated Swimsuit Issue.

Natch, she wore yet another sexy getup for the party held in honor of the issue last month.

"So happy and proud to be a part of the opening ceremony #sochi2014 #olympics," the patriotic Russian tweeted about the Olympics.