Géraldine Reuteler arrived at the Sobha Realty Training Centre for the first time to become a Gunner, and you can see how it all unfolded with our behind-the-scenes look.
She got changed into her new training kit, completed a medical, met Renée Slegers and took a tour of the complex.
Then it was time to sign her contract in the boardroom and sit down for her first club interview.
Press play on the video above to see how the day unfolded.
Géraldine will wear the number 14 jersey - get her shirt now on Arsenal Direct!
