Kaitlyn commented: "Having the opportunity to play together in the GB squad is a once in a life time opportunity. It's great having each other as we have something the other girls don't; continuous family support.
"It can be hard when you come away to tournaments like this, away from home, with little assurance of what to expect. If you're having a bad day you've got the team to pick you up but having your sister there to chat with is an extra addition."
Megan added: "We are very close and get along with each other well which helps in our progression and improvement as players as we're not afraid to assist each other by telling each other what we're doing wrong or what we need to do better. We do argue like all sisters as we are very competitive, but the extra advice and support we offer each other makes everything seem easier."
Sisters Kaitlyn and Megan come from a big basketball family with their younger sister Ellen competing in the under-16 national team and father, Tim Lewis, has worked with the Standard Life GB men's senior and under-20 teams.
They began playing basketball at their local gym which is home to the Sevenoaks Suns in a mixed under-12 side. With their basketball pedigree, they quickly progressed into the older age group teams where Megan and Kaitlyn first played together for the England under-18 side.
Megan continued: "One day we hope all three sisters can play for GB together!"
The Standard Life GB under-20 women face Mecedonia in their first game of the Under-20 European Championship Women Division B this evening in Sport Hall Albena. Head coach, Matt Johnson said: "After our preparation period we are really ready for the first game in this year's Championships.
"Macedonia will offer us many challenges with their pace and potential ability to disrupt the ball. They possess a number of players coming up from successful under-18 European Championship performances. However, we are looking forward to the challenge that is ahead of us this evening."