B HELEN WELSHIMER HEN Rosie Dolly announced not long ago that she intends to enter a convent and close the door behind her if her recent ' marriage to Irving Netcher, New York business man, doesn't turn out the way that all good marriages should, she was merely saying that there may be such a thing as an endurance limit to the troubles which seem to beset girls who do sister acts. Rosie and Jenny Dolly have had all sorts of ups and downs, The Duncan Sisters, Vivian and Rosetta, have had plenty of misfortunes, too. Just now they are bankrupt. So are Beth and Betty Dodge. The Sisters G. haven't been exempt from dark moments, either. The Dolly Sisters, who became musical comedy queens, were Brooklyn girls once upon a time. Their troubles commenced in a convent school in Berlin. They staged ft barefoot dance, in their nightgowns, after they had seen Isadora Duncan dance. The noise attracted attention. And the Dolly Sisters were expelled. But if the world doesn't give her some better breaks than it has been doing lately Rosie is going straight back to a convent again. The Dolly Sisters danced their way to international-fame very soon'after they began their act. In the meantime, they were married. Jenny, whose real name is Yancsi, married Harry Fox, an actor. Rosie, or Ro- azika, chose Jean Schwartz, a song writer. Both girls were 1 7. And neither romance lasted, Jenny became divorced in 1921. Rosie obtained her freedom about the same time. T HE sister act, which had been broken at Jenny's marriage since she played with her husband for a while, was put together again. Meantime, their fame was growing. They stayed together. They even referred to themselves in the singular, because every thing one of them did was also done by the other. Then they signed a contract, in 1924, to appear at the Moulin Rouge, the famous theater in Paris. M. Foucret, the manager of the playhouse,' had decided that the two slim, black- haired girls would be excellent drawing cards for his show. He signed them up at a salary of 3,000 francs a day. The contract stated that no other The Sislers G. . . . "rvho got a taste of bad when an auto .crash spoiled their resemblance to another. artist's name was to appear in letters as big their name in the publicity. They were the stars. But the theater apparently forgot. Not very long after the Dolly Sisters had been hired, the management engaged Mile. Mistinguett, the famous Parisian dancer, to appear in the same show. Her salary was to be 5,000 francs a day. Furthermore, she was to have something to say about costumes and stage management. T HE Dolly Sislers stayed for three weeks. Then they walked out on a rehearsal. explained that the management and Mistinguett had "suppressed" them. They went to court about it. It took two years, but they won their suit against the theater for 550,000 francs . . or about $27,500.