American tennis ace Serena Williams, who tied the knot with Reddit co-founder fiancé Alexis Ohanian last week, felt like a "princess and superwoman" on her wedding day. Serena wrote on Instagram yesterday: "For the first dress When Anna Wintour asked me what I wanted to wear I said "a cape" I just want to wear a cape" she said: "well Sarah Burton with @alexandermcqueen is the one for you." Thanks Anna. Thanks Sarah. I felt like a princess and superwoman all at once @mistadubb @ericamelissa_ (sic)," she wrote.