Serena Williams' bundle of joy flexes her 'biceps'!

ANI | Updated: Sep 16, 2017 09:16 IST

New Delhi [India], Sep 16 (ANI): Here's another precious picture of the tennis superstar Serena Williams' daughter Alexis Olympia Ohanian Jr.

Serena and fiance Alexis Ohanian, who have opened an Instagram account of their newborn, shared the pic where she is fast sleep in a onesie that reads 'Smart and Strong like my Mama'.

'Biceps,' the caption read.

Biceps ????

A post shared by Alexis Olympia Ohanian, Jr. (@olympiaohanian) on

The 23-time grand slam singles champion gave birth on September 1, and announced on Wednesday that she and her fiance, Alexis Ohanian, have named their daughter Alexis Olympia Ohanian Jr. (ANI)