Princess Charlene's twin children embraced each other for their sweet ninth-birthday portrait.
Prince Jacques and Princess Gabriella of Monaco beamed for the camera, which the official Monegasque Royal Family shared on social media.
Princess Gabriella wore a gorgeous outfit with a matching beret and a stylish navy coat.
Her twin brother, Prince Jacques, looked smart in a military-style uniform blazer which was paired with navy trousers.
WATCH NOW: Prince Albert and Princess Charlene of Monaco step out on Monaco's National Day
The caption read: "Happy Birthday Prince Jacques and Princess Gabriella."
Princess Gabriella and Prince Jacques were born on December 10, 2014, at the Princess Grace Hospital in Monaco.
At the time, Charlene admitted she was "crazy in love" with her "magical" twins.
She added: "What I can tell you is that they are both very active and very expressive.
Prince Jacques and Princess Gabriella celebrated their ninth birthday
Eric Mathon / Palais princier
"They are beautiful, adorable."
The princess also spoke about the moment her children were born.
Charlene also told the Monaco Matin newspaper: "At first, I was happy to hear their first cries.
"I was obviously a bit overwhelmed with emotion.
Princess Charlene pictured with her family on the Prince's Palace of Monaco balcony
Reuters
LATEST ROYAL NEWS:
Princess Charlene has spoken about her love for her children on many occasions
Reuters
"Every second with them is magical. I look forward to spending more time in their presence."
Gabriella was born at 5.04pm, with Jacques following two minutes later.
Despite the prince being born a few minutes later, Monaco is still governed by male-preference primogeniture.
This means Prince Jacques will inherit the throne before his older sister.