Jack Whitehall’s model girlfriend Roxy Horner has celebrated her 30th birthday in style. The blonde beauty, who was diagnosed with an autoimmune disease last month, and her comedian beau, 32 enjoyed a luxurious meal at The Rivoli Bar at The Ritz hotel in London for the milestone occasion on Saturday.The Essex-born beauty, who has dated Jack for just over a year, described how she had “the most incredible birthday weekend” in a set of gorgeous snaps to her 183,000 Instagram followers.