The actress wouldn't definitively confirm whether or not she would be attending, but she was somewhat frustrated with her own remarks about the wedding she made earlier in the day.
The tennis Olympian also gushed to ET about her adorable daughter, Alexis Olympia, while on the red carpet at the premiere of her new documentry series 'Being Serena,' which premieres May 2 on HBO.
William joined the soon-to-be married couple for a service of commemoration and Thanksgiving at Westminster Abbey on Wednesday, marking his first public appearance since the birth of his third child.
Celebrity makeup artist Spencer Barnes worked with the 'Suits' star before she became part of the royal family. Now, he's weighing in on how her beauty and makeup looks have evolved!