Ordinarily the restriction of not getting a haircut during Sefira is until Lag Ba’Omer (the 33rd day of the Omer) which this year is Sunday, April 28th.
This year since it is on a Sunday, it is permissible to get a haircut on Friday in honor of Shabbat.
רמ”א אורח חיים תצ”ג ס”ב: “מיהו אם חל ביום ראשון נוהגין להסתפר ביום ששי לכבוד שבת
Note that Sephardic practice is not to take a haircut until the 34th day of the Omer which this year is Monday, April 29th.