Adriana Lima has given birth to a baby girl.

The 31-year-old model and her husband, former NBA star Marko Jaric, welcomed a second daughter who they have named Sienna and Adriana revealed their two-year-old daughter Valentina is thrilled to become a big sister.

She wrote on twitter: ''Marko and I are overjoyed to welcome Sienna into our family and Valentina is looked forward to becoming a big sister.''

The Victoria's Secret beauty - who met Marko in 2006 and married him in February 2009 - has previously proclaimed motherhood to be the ''best job in the world''.

She has said: ''The best job in the world for me is being a mom. I never thought I could love so much. I always thought, does unconditional love exist? Now I know it does because I feel it.''

Brazilian Adriana previously admitted she knew she wanted to Settle down with Marko and have children when they first met.

She said: ''I knew he was the one and I could see myself married to him and with a big family.''