Question: Are the magazines Costume and Diva both published monthly?

Context paragraphs:
L'Unité pour le socialisme: L'Unité pour le socialisme is the main organ of the Socialist Party in Senegal.  The magazine is published monthly since 1984.  Its headquarters is in Dakar.  It is the successor of "L'Unité africaine" which had been published monthly between 1958 and 1984.

COINage: COINage, a monthly American special-interest magazine, targets numismatists and coin investors.  Behn-Miller Publications, Inc. - under the joint ownership of Gordon Behn and "COINage" editorial director James L. Miller - originally published the magazine on a quarterly basis.  In 1965 the magazine moved to a bimonthly publishing schedule, and has been published monthly since 1966.  Behn retired in 1982, making Miller the sole publisher of "COINage", as well as sole owner of the renamed Miller Magazines, Inc.  Trimbach Media, Inc. purchased "COINage", in 2012.

Costume (magazine): "Costume" is a Finnish language monthly women's and fashion magazine published in Helsinki, Finland.  It is the Finnish version of the magazine with the same name which is also published both in Norway and in Denmark.

Sylph (magazine): Sylph (シルフ , Shirufu ) is a Japanese shōjo manga magazine published by ASCII Media Works (formerly MediaWorks) and is sold monthly.  The magazine was originally published on December 9, 2006 as a special edition version of MediaWorks' now-defunct "Dengeki Comic Gao! " under the title "Comic Sylph" (コミックシルフ , Komikku Shirufu , normally written as "comic SYLPH") as a quarterly publication.  On March 21, 2008, with the release of the sixth volume, the magazine was transferred over as a special edition version of ASCII Media Works' shōnen manga magazine "Dengeki Daioh".  On May 22, 2008, the magazine became independent of "Dengeki Daioh" and was published as volume one of "Sylph" as the July 2008 issue as a bimonthly publication.  On May 22, 2010, the magazine started to be published monthly.  "Sylph" is one of the few magazines originally published by MediaWorks not under the "Dengeki" naming line, such as with "Dengeki Daioh", and "Dengeki G's Magazine", the first of which being "Active Japan" in 1995 which has been discontinued since 1998.

Diva (magazine): DIVA is a leading lesbian magazine in the United Kingdom, published monthly.  It was launched in March 1994 by Millivres Ltd, under the editorship of Frances Williams and is now published by Twin Media Group, which is owned by Silke Bader and Linda Riley.  Silke Bader is also the publisher of Curve magazine in the USA and LOTL in Australia, and Linda Riley runs the European Diversity Awards and is the former publisher of g3 magazine in the UK.

Comp Ace: Comp Ace (コンプ エース , Konpu Eesu , short for "Comptiq Ace") is a Japanese computer game and manga magazine published by Kadokawa Shoten.  "Comp Ace" began as a special edition version of another one of Kadokawa Shoten's magazines, "Comptiq".  The first issue was released on March 26, 2005, and was published quarterly for the first three volumes which had cover illustrations by Itaru Hinoue of Key.  Volumes four through nine where published bimonthly with cover art providved by Aoi Nishimata of Navel.  Volume ten was published three months after volume nine, and from ten on the magazine was published monthly, now with new cover art by Naru Nanao, Hiro Suzuhira, and illustrators from Type-Moon and August.  Starting with the August 2007 issue published on June 26, 2007, "Comp Ace" broke off from "Comptiq" and became its own magazine.  Its main focus is on bishōjo games and manga that are based on said games.

Water Forest Press Publishing: Water Forest Press is an independent book publisher located in rural Pennsylvania.  Water Forest Press was created by Victoria Valentine, as an imprint of Skyline Publications.  Skyline Publications produced print magazines that were retired in 2004.  Water Forest Press replaced Skyline Magazines with Skyline Review, Literary House Review & Hudson View Poetry Digest books.  Skyline Publications published monthly literary magazines that were distributed nationwide in stores, libraries, universities and homes, with a readership of approximately 10,000 per issue.  "A Tribute To America" issue (dedicated to 9/11) was reprinted three times.  All proceeds from the Tribute Issue were donated to local fire houses to purchase needed equipment.

Brides (magazine): Brides is an American bimonthly magazine published by Condé Nast, who purchased the title in 1959.  As with many similar bridal magazines, it is designed to be an in-depth resource for brides-to-be, with many photographs and articles on wedding dresses, cakes, ceremonies, receptions, and honeymoons.  It was the sister publication of "Modern Bride" and "Elegant Bride" magazines, until the demise of those titles in October 2009.  Then, the frequency of "Brides" changed to monthly.  The magazine was published monthly until 2013 when the frequency was switched to bimonthly.

British boys' magazines: Magazines intended for boys fall into one of three classifications.  These are comics which tell the story by means of strip cartoons; story papers which have several short stories; and pulp magazines which have a single, but complete, novella in them.  The latter were not for the younger child and were often detective or western in content and were generally greater in cost.  Several titles were published monthly whereas the other two categories were more frequent.

Global Sources Magazines: Global Sources Magazines are a series of trade magazines designed for businesses importing from China and Asia.  There are 19 specialized industry-specific titles published by the business-to-business media company Global Sources (NASDAQ-GS: GSOL).  All except two titles are published monthly.

Supporting paragraphs: Costume (magazine) Diva (magazine)
Answer: yes