article_snippet: Appearing on the front cover of US Vogue, the American world
article_snippet: No 1 admits that times can get tough at the top and that Serena Williams is glad to have Wozniacki and sister Venus around for support. '
article_snippet: It’s hard and lonely at the top,' Serena Williams confessed to US Vogue. '
article_snippet: No 1 Serena Williams appears on the front cover of US Vogue and showed off Serena Williams fit physique .
article_snippet: Serena Williams shared an Instagram image touting Serena Williams US Vogue issue in which Serena Williams admitted: 'It’s lonely at the top'
article_snippet: Serena Williams went on to say: 'On the court, I am fierce!
article_snippet: Serena Williams said: 'On the court, I am fierce!
highlights_snippet: 1 Serena Williams appears in the April issue of US Vogue .
  