Wang Xuebing's beautiful wife, Sun Ning, made an appearance in a fiery red dress. Recently, Sun Ning attended a promotional event. She appeared in a red dress and was constantly playing with her hair and adjusting her clothes after sitting down. The wide-open sleeve of the red dress also exposed her flesh-colored breastè´´.
(Note: The phrase "breastè´´" seems incomplete or unclear in the original text, so it may need further clarification or correction.)
For a more polished translation, the last part could be adjusted depending on context or additional information:
"The revealing red dress also exposed her flesh-colored bra."
This would provide a clearer and more natural English sentence.