Serena Williams, who recently announced that she’s expecting a child with her fiance Alexis Ohanian , has penned a heartfelt note to the baby.

“My Dearest Baby, You gave me the strength I didn’t know I had. You taught me the true meaning of serenity and peace. I can’t wait to meet you. I can’t wait for you to join the players box next year. But most importantly, I am so happy to share being number one in the world with you…. once again today. On @alexisohanian bday. ? from the world’s oldest number one to the world’s youngest number one. -Your Mommy,” Serena wrote.

However, Ilie Nastase said some unspeakable words about Serena’s unborn child . Nastase, a former world number one, was heard speculating whether Williams’ child would be “chocolate with milk?”

“It disappoints me to know we live in a society where people like Ilie Nastase can make such racist comments,” Williams said in a statement. “I have said it once and I’ll say it again, this world has come so far but yet we have so much further to go,” Williams added. “Yes, we have broken down so many barriers – however there are a plethora more to go.

“This or anything else will not stop me from pouring love, light and positivity into everything that I do. I will continue to take a lead and stand up for what’s right.”

The International Tennis Federation (ITF) has launched an investigation into the comments made by 70-year-old Nastase, Romania’s Fed Cup captain, at a news conference before their tie with Great Britain in Constanta last week.

“I humbly thank the ITF for any consideration given to all the facts in this case. They will have my full support,” added Williams, who announced her engagement to Reddit co-founder Alexis Ohanian in December.