Grant Gustin shares first picture of Supergirl cross over 

Just over week ago, we learned that the much rumoured crossover between The Flash and Supergirl was officially going to happen. Along with the 90’s Flash, Kara Zor-El is very briefly glimpsed during the next episode of The Flash, which airs next week on Sky One. 

Grant Gustin (The Flash/Barry Allen) took to Instagram to share the first photo of him and Melissa Benoist (Supergirl), both wearing their superhero costumes. Barry Allen and Kara can be seen on set, while shooting “World Finest” — the eighteenth episode in the first series of Supergirl.

I fully expect The Flash to travel to an alternate Earth, where Supergirl exists. Trust me, it’s only a matter of time before Arrow shows up in Gotham. 

The Flash/Supergirl crossover has been confirmed 

There’s been talks about a possible crossover between The Flash and Supergirl ever since Supergirl was announced. Well, now it’s been confirmed that the crossover between the two shows is actually going to happen.

American network, CW announced today that The Flash star Grant Gustin will guest star in an episode of Supergirl and that episode is set to air in the US on March 28th.

As of yet, plot details are very thin on the ground but I suspect this will involve Barry travelling to an alternate Earth.

Really really. Flash is about to meet Supergirl. @melissabenoist

A photo posted by Grant Gustin (@grantgust) on

Executive producers Greg Berlanti and Andrew Kreisberg had this to say:

“We are so incredibly excited to announce something that we have dreamed of happening since we started making ‘Supergirl’ – The Flash and Supergirl are teaming up! We want to thank Grant Gustin for making the time to come visit (on top of his already immense workload) and all of the folks at CBS, The CW, Warner Bros. and DC for working this out. And finally thanks to the fans and journalists who have kept asking for this to happen. It is our pleasure and hope to create an episode worthy of everyone’s enthusiasm and support.”

Supergirl/Flash crossover in development? 

Ever since Supergirl was announced, there have been rumours that she would crossover with The Flash and Arrow. 
But CBS (the network that produces Supergirl) said they weren’t interested in a crossover. Now Bleeding Cool have suggested that CBS might have reconsidered their stance and are moving forward with crossover plans. 

Supergirl was initially ordered for thirteen episodes with an option for nine more to complete a twenty-two episode first series. Bleeding cool say that if CBS orders those extra nine, the crossover could happen in one of those episodes. 

We already know that every DC TV project takes place in the same universe, regardless of Network. The recent appearance of Constantine in Arrow saw a ratings increase of 11% so CBS would be crazy to turn down the opportunity.