The world's top tennis player is soon to become a mother. Revealing her already growing baby bump in her luxurious vacation photos, the athlete is glowing and happy. The engaged couple Serena Williams and her fiancé Reddit founder Alexis Ohanian spent relaxing times at the Marina Bay on a yacht.

The 35-year-old world champion shared the photos via Instagram as reported by Travel & Leisure. She also shared an open letter for her unborn child writing how excited she is of his/her birth, her joy in sharing her success with her baby, and the peace and serenity he/she has brought into her life.

Her equally expressive fiancé wrote on his social media account saying, "She has the biggest heart. Everyone sees her success as an athlete, but all of that is layered on the size of her heart. She gives 100% of herself to everything she does: as a friend, as a lover, and soon, as a mother."

Ohanian and Williams met in Rome in May 2015 after a series of failed relationships with celebrity boyfriends. She has dated singer Drake, Common, basketeer Amar'e Stoudemire and movie director Brett Ratner. But none of them stayed on for the world champion. Friends of Williams say that the father of her baby is different.

He is laid back, has a relaxed personality and is very focused on her. Her friends describe him as supportive, caring and know how to balance her stressful life. He even takes the time to support her during her matches.

Recently, Serena Williams attended Beyonce's baby shower together with Michelle Williams and fellow Destiny's Child members as reported by Elle. Beyonce will soon give birth to twins giving to her only daughter Blue Ivy double joy. Serena Williams shares the same joy as she waits in anticipation for the birth of her first child with her millionaire fiancé Alexis Ohanian.