If you were to put a face to LinkedIn a couple of months ago, you would most likely picture a white collar, middle-aged man wearing glasses and a black suit.

On the other hand, the face of a social media site like Facebook or Twitter would probably look more like a laid back, twenty-something dude (ala Justin Long in those Apple commercials).

But in the last month or so, LinkedIn has made a huge effort to catch up with its hipper rivals – and gotten a much-needed facelift in the public eye.

GigaOm reports that LinkedIn is launching a new button this month called “Apply with LinkedIn.” The function essentially lets job candidates use their LinkedIn profiles as resumes, to apply directly for jobs.

As Mashable’s Sarah Kessler points out, this is a smart move for LinkedIn because employers are a vital demographic for the now public company; hiring solutions generate a whopping 43 percent of the company’s revenue, according to GigaOm. Forbes’ Dan Schawbel predicts that more companies will use LinkedIn’s button as job boards become less popular.

This news comes on the heels of LinkedIn’s new share button which, much like Facebook’s ubiquitous “like” button, allows readers to share articles with their social networks.

And earlier this spring, the company launched LinkedIn Today, a daily online “newspaper” that curates stories shared by LinkedIn users around the world.

Shares rose to an impressive high of USD $122.70 soon after LinkedIn went public a few weeks ago, causing Slate and other publications to speculate whether social media represents a new tech bubble.

However, shares have since dropped to approximately $77 on Wednesday, suggesting that this bubble may burst before it’s fully inflated.

Whatever the case may be, we’re not going to underestimate LinkedIn anytime soon.