After stomping the runways of Milan Fashion Week, super model Cara Delevingne returned to London with rumored girlfriend Michelle Rodriguez traveling by her side, while carrying an acoustic guitar.

Cara Takes a Topless Pic for Instagram; Taken by Michelle?! [PHOTO]

Milan Fashion Week proved to be a great experience for the 21-year-old international model.  On her Instagram, she posted pictures with Kendall Jenner, Jourdan Dunn, Karl Lagerfeld, and even filmed herself while strutting her stuff on the catwalk.  35-year-old Michelle Rodriguez, her rumored girlfriend, was spotted backstage at the Fendi show last week in support of her career.  

Now that the fun is over, the two were pictured traveling to London together on Feb. 24.  Fast and Furious star Rodriguez wore a black leather jacket coupled with a black tank top, and tousled black hair.  Delevingne wore no makeup and a long beige peacoat, a Mulberry bag from her collection, and carried an acoustic guitar with her.  

Cara and Michelle's Public Make Out Session [PHOTOS]

The multitalented super model sings and has written songs since she was 13.  But, besides a 2012 collaboration she did with Will Heard called Sonnentanz (Sun Don't Shine), she has not focused much on her musical talent.  So why the guitar?  Rumor has it that she and super producer Pharrell may be working on music of their own.  

The two were seen chatting at the Elle Style Awards 2014 in England on Feb. 18th.  The Belfast Telegraph UK reported that Williams said, "Cara is untapped talent. I think Cara is much bigger than what everyone thinks. You have no idea what's going to happen."

Delevingne, a longtime fan of Pharrell, gushed, "You don't understand how weird it is when he says things like this. I'm thinking, 'I feel like a little girl."  She continued, "He knows what's good. He really does."

If Williams asked Cara to start writing in hopes of getting a hit from him, the new collaboration may very well be about her romantic times with Michelle Rodriguez as they travel around the world.