"She uses Kerastase products on her hair. The Queen loves having her hair done!" a source tells Us Weekly. "She's very relaxed and likes to drink a glass of brandy and Coke, although obviously she won't be doing that at 9 a.m.!"
Her 89-year-old husband, Prince Philip, Duke of Edinburgh, "often looks on and makes jokes," the insider adds. "He's a real character."
No word yet on what the English monarch will wear to the ceremony.
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