If you thought the Sports Illustrated's Swimsuit Issue couldn't get any sexier, well -- it just did.

The much-anticipated 2015 Swimsuit Issue will come out Feb. 9 and will feature the magazine's first plus-size ad, starring the gorgeous Ashley Graham. It's about time, SI!

In issue, Graham wears a black string bikini in an ad campaign forSwimsuitsForAll -- a company that famously recreated the cover of the Swimsuit Issue with all plus-size models last year .

“I know my curves are sexy and I want everyone else to know that theirs are too. There is no reason to hide and every reason to flaunt," said Graham in a press release. "The world is ready for more curves in bikinis."

Previously, Graham has graced the cover of Elle Magazine Quebec and appeared in multiple campaigns forLevi's and Lane Bryant. Just last year, Graham was one of five plus-size models that earned a spot on IMG's coveted modeling roster.

Plus-size models made serious strides in 2014. Candice Huffine appeared in the ultra-sexy Pirelli Calendar, clothing retailer Evans closed out London Fashion Week and the Penthouse Forum put a plus-sized model on their cover.

We hope 2015 will feature even moremodels of different body shapes and sizes, because if Robyn Lawley stillisn't sexy enough for Sports Illustrated, we don't know who is.

Check out a preview of the SwimsuitsForAll ad shoot below: