"This is such an incredible moment, I can never get used to the feeling of standing here as champion".
"Gosh, 22. that's insane. really crazy", Williams, who now has seven Wimbledon singles championships among her collection, told ESPN in an interview after the match.
Singer Beyonce with her husband musician Jay Z with Williams' family and friends.
"It's been incredibly hard not to think about", Williams said in an interview on Centre Court.
"I had to start looking at positives, not focusing on that one loss per tournament which anyone else on this tour would be completely happy about".
Serena has now won both the Wimbledon singles and doubles (with Venus) in the same year on four occasions. Surely, given the way she is playing, she can win two more grand slams, to end any debate that she is the best player who ever lived?
Later, Williams earned a second piece of hardware when she and Venus beat Timea Babos and Yaroslava Shvedova 6-3, 6-4 for their sixth doubles trophy at Wimbledon and 14th from all majors.
The top seed was denied a calendar Grand Slam by Italy's Roberta Vinci at Flushing Meadows past year, before slipping up to Kerber in Melbourne and then Garbine Muguruza in Paris. "We played a great match", said Kerber.
"I had a couple of tries this year", said Williams, who went back on court a few hours later to win the doubles title with older sister Venus. I think I'm on a good way to play better and better.
Earlier Saturday, Serena had defeated Angelique Kerber 7-5, 6-3 in the women's singles final.
Kerber didn't fold. She picked up her game in the second set, pumping her arms to celebrate winners as the Centre Court crowd tried to will her back into the match.
"I was trying everything", Kerber said, "but she deserved it today".
On Saturday, shortly after she won her seventh Wimbledon title with a 7-5, 6-3 win over Angelique Kerber to equal Steffi Graf's open-era record of 22 grand slam singles titles, she was asked if she understood that now everyone would immediately start talking about the all-time record of 24, held by Margaret Court. She reached the finals of the Australian Open and the French Open. Williams said she had learned that obsessing about numbers was no good for anyone, suggesting that the shackles are now off and the pressure would be reduced.
Kerber didn't have too many regrets in her defeat. I'll take it one at a time.
'I feel like when you're great you are greedy because you want to keep going back to the table, ' Williams said.
When she walked out for the match, Serena had her "nobody beats my big sister Venus" face on. In Melbourne I thought I played well but obviously Kerber played better. And 18. I struggled a little with (winning number) 18. This seventh title also means Williams is closing in Martina Navratilova's nine trophy wins. "You really deserve it, you are a great champion, a great person", Kerber said.