With her only brother Michael to look after the girls, the 6 Kaif sisters let their hair down and whooped it up to their heart's content.
And she can't over the fact that her sisters who accompanied her have all blossomed into lovely women.
"It was quite a glamorous sight, if I may so so myself to see six similar- looking women accompanied by one 30-year handsome guy (my brother Michael) into restaurants in Spain. We formed a secret society that quite comfortable excluded everyone around.We were just happy being one big family."
The downside of this cosy family reunion in Marbella was that all the Sapnish guys just stayed away. "I think they got intimidated seeing six girls accompanied by one man. They couldn't make out what the man's connection with all these woman was."
Only the eldest sister from the Kaif family got some male attention in Marbella.
Explains Katrina, "That's because she speaks fluent Spanish. She had a Mexican boyfriend....So my eldest sister interacted with the local population in Marbella. All the sisters just stuck together having a ball with an invisible ‘No Trespassers Allowed' board stuck to us."
Now back in London Katrina wants to get back to Mumbai. "I'm not being used to being fussed over. My mother is constantly inquiring about my food. That gets to me. Because basically I'm a loner.'
It'd be a while before Katrina gets back to Mumbai. Speaking from her London home Katrina says, "This has to be the best birthday of my life.I had the time of my life. It's quite a sight to see all us sisters and our protective brother walking together. I must say all my sisters are better looking than I am."
Katrina will fly to Chicago and Atlanta to take part in the Independence Day carnival in Chicago before heading home. "I'm participating with Shah Rukh Khan. We've been to events together."